¿ como se producen los cambios de el siglo? porfa es urgente :(

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Answer 1

como, Estes todos .........


Related Questions

The ABO locus for blood typing consists of three alleles, A, B and i. An analysis the ABO blood types in the population of the Pingelap atoll of Micronesia is being planned. A Chi-Square analysis is being planned as part of the data analysis. How many degrees of freedom are there in the experiment

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Answer:

1/8(12.5) if the answer is correct plz mark me as brainliest.

Question 9
What is the main difference between a prokaryote and eukaryote cell?

Answers:
The presence of a cell wall
The presence of genomic DNA
The absence of genomic DNA
Crossing over
The absence of a cell wall
Question 10

Please choose 1

Answers

the presence of genomic DNA

how do humans impact the biodiversity of ecosystems

Answers

Answer:

Humans affect biodiversity by their population numbers, use of land, and their lifestyles, causing damage to habitats for species. Through proper education, and by demanding that governments make decisions to preserve biodiversity, the human population will be able to sustain life on earth longer.

Explanation:

[tex]\texttt{ANSWER:}[/tex]

Human population levels, land usage, and lifestyles all have an impact on biodiversity, causing damage to species' habitats. The human population will be able to maintain life on Earth for longer if adequate knowledge is provided and governments are forced to make decisions that protect biodiversity.

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[tex]\texttt{HOPE IT HELPS}[/tex]

[tex]\texttt{HAVE A GREAT DAY!!}[/tex]

What are three structural differences between animal and plant cells

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All living things are made up of cells. Cells are the basic unit of a living organism and where all life processes are carried out.

Animal cells and plant cells share the common components of a nucleus, cytoplasm, mitochondria and a cell membrane.

Plant cells have three extra components, a vacuole, chloroplast and a cell wall.

How has the natural environment in your area been affected by the human environment? ​

Answers

Answer:

animals are dying :( and people are hunting

Explanation:

An adult giraffe (Giraffa camelopardalis) has a heart that lies approximately 2 m below the top of the head when its neck is fully extended. Calculate the minimum diastolic pressure that a giraffe must have (in mm Hg). Hint: what is the absolute minimum blood pressure a giraffe could have at the very top of its head

Answers

Answer:

159.01 mmHg

Explanation:

position of Heart = 2m  below the top of the head  given that the neck is fully extended

Determine the minimum diastolic pressure

Minimum diastolic Pressure = 1060 kg/m^3 * 10 m/s^2 * 2m

                                               = 21200 kg/m^2

convert the value to Pa

21200 kg/m^2 = 21200 Pa

( 1 pa = 0.00750062 mmHg )

Therefore : minimum diastolic pressure = 21200 * 0.00750062 = 159.01 mmHg

The minimum diastolic pressure that a giraffe must have is 150 mmHg

Diastolic Blood pressure

Diastolic Blood pressure is the pressure on the walls of your arteries between heartbeats, that is when the heart is resting.

The minimum diastolic diastolic blood pressure = absolute minimum blood pressure a giraffe could have at the very top of its head.

Pressure formula

P = hpg

where;

P = pressure

h = height difference

p = density

g = acceleration due to gravity

Density of blood = 1000 kg/m^3

h =2.0 m

g = 10 m/s^2

Pressure = 1000 × 2.0 × 10

Pressure = 20000 Pascal or 20 kpa

Converting to mmHg

1 kpa = 7.50 mmHg

20 kpa = 20 × 7.50

Pressure = 150 mmHg

Therefore, the minimum diastolic pressure that a giraffe must have is 150 mmHg

Learn more about diastolic blood pressure at: https://brainly.com/question/14661197

define cell and atom​

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The key difference between sale and Adam is that sale is made of molecules where is Adam make a molecule cells are the smallest functioning unit and then living organism yet hands and Adam is the smallest unit of matter usually a sale is on the micrometer scale while the item is on the angstrom scale.

During the process of DNA replication, the whole molecule gets copied in the [A] phase of the cell cycle. The DNA strands are separated by the enzyme [B] while [C] keeps it from overwinding. The 2 strands are copied differently. The [D] strand is made continuously, while the [E] strand is synthesized in small sequences called Okazaki fragments. The main enzyme involved in DNA replication is [F]. This enzyme can only add nucleotides to an existing strand, so short sequences of [G] made by the enzyme [H] are needed for the process of elongation. In the [U] strand, the enzyme DNA polymerase one removes the short tj sequences and fills the gaps, while [K] joins the fragments.

Answers

Answer:

Synthesis, DNA helicase, topoisomerase, leading strand, lagging strand, DNA polymerase, nucleotides, primase, lagging strand, nucleotide, DNA ligase

Explanation:

During the process of DNA replication, the whole molecule gets copied in the synthesis or S phase of the cell cycle. The DNA strands are separated by the enzyme helicase while topoisomerase keeps it from overwinding. The 2 strands are copied differently. The leading strand is made continuously, while the lagging strand is synthesized in small sequences called Okazaki fragments. The main enzyme involved in DNA replication is DNA polymerase. This enzyme can only add nucleotides to an existing strand, so short sequences of nucleotides (primer) made by the enzyme primase are needed for the process of elongation. In the lagging strand, the enzyme DNA polymerase one removes the short tj sequences and fills the gaps, while DNA ligase joins the fragments.

A Synthesis,

B DNA helicase,

C topoisomerase,

D leading  

E lagging strand

F DNA polymerase

G nucleotides

H primase

I lagging strand

J nucleotide

K DNA ligase

Why do scientists study seismographs?

Answers

To analyse mineral content from earth's crust

Answer:

To determine the location of an epicenter

Explanation:

A seismogram is a graph output by a seismograph ; a record of the shaking and vibration of the ground. By studying seismograms, scientists learn a lot about Earth's internal structure, like how fast the waves are moving and what type of material the waves are passing through.

Scientists think that red pandas and raccoons share a more recent common
ancestor than red pandas and giant pandas do. If this is true, what would you
expect to be true about the genetic sequences in these organisms?
O A. Red pandas and raccoons must have identical DNA sequences.
B. The DNA sequences of giant pandas are likely to be more similar
to the sequences of raccoons than of red pandas.
C. Red pandas must have a different genetic code than giant pandas.
O D. The DNA sequences of red pandas are likely to be more similar to
the sequences of raccoons than of giant pandas.

Answers

Answer:

D seems to be best answer if that was my test

Explanation:

makes the most sense

Answer:

D

Explanation:

Individuals with premutation length repeats in FMR1 may have some of the phenotypes of Fragile X but not others, which is _____________; for example, some individuals may have cognitive deficiencies, while others might have late onset ataxia. In addition, some individuals will have no phenotypes of the condition at all, due to ____________.

Answers

Answer:

variable expressivity; incomplete penetrance

Explanation:

In genetics, variable expressivity refers to the fact that individuals having the same alleles/genes/genotype associated with a particular genetic condition may exhibit different clinical features of this condition. In general, variable expressivity is due to the combination of both genetic and environmental factors. An example of variable expressivity is the Marfan syndrome, where all individuals with this disorder have a dominant mutation in the FBN1 (fibrillin 1) gene and show different degrees of the same phenotype. Moreover, incomplete penetrance (also known as reduced penetrance) refers to the complete absence of a genetic trait or disease in individuals having alleles/genes/genotype associated with the condition. In consequence, individuals with incomplete penetrance do not develop features of the disease. An example of incomplete penetrance is given by those individuals with mutations in BRCA1/BRCA2 genes (associated with an increased risk of developing breast cancer) that do not develop cancer.

Read the paragraph below to answer the question.
This event was of great significance to modern Chinese history. The monarchial system was
discarded with the founding of the provincial government of the Republic of China. The
victory was soon compromised by concessions on the part of the Chinese bourgeoisie, and
the country entered a period dominated by the Northern Warlords, headed by Yuan Shikai.
(1 mark)
What event is described above and in which year did it happen?
(2 marks)​

Answers

Answer: 2

Explanation:

Which of the following statement(s) is/are true regarding the adrenal glands' relationship with the autonomic nervous system?

a. The adrenal cortex is an extension of the parasympathetic nervous system.
b. The adrenal medulla secretes norepinephrine when stimulated by the sympathetic nervous system.
c. The adrenal glands are strictly nerve tissue.
d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.
e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.

Answers

Answer:

The true statements regarding the adrenal glands' relationship with the autonomic nervous system are:

a. The adrenal cortex is an extension of the parasympathetic nervous system.

c. The adrenal glands are strictly nerve tissue.

d. The parasympathetic division stimulates the adrenal cortex to secrete glucocorticoids.

e. The adrenal medulla is penetrated by the fibers of the sympathetic nervous system.

Explanation:

The  levels of the central nervous system which play important roles in influencing the autonomic nervous system include cerebral cortex, hypothalamus, brain stem, and spinal cord.  Usually, epinephrine (adrenaline) and norepinephrine are released into the blood stem when stress or a threat occurs.  This alert serves as a warning signal and defense system.  The purpose is to maintain homeostasis.

Which way do the chlorophyll bands move on the chromatography paper?

Answers

Answer:

They move up the chromatography paper.

Because the movement of the chlorophyll bands on the chromatography paper is dependent on the stationary phase and the mobile phase, the pigment separates different colors when moving the top of the paper.

What is the significance of chromatography?

Chromatography is a technique that is used to separate and analyze a mixture of chemical substances and is a powerful tool in various fields such as chemistry and biochemistry. The significance of chromatography is that it allows scientists to identify and quantify individual components in a mixture and these techniques are helpful for the synthesis of drugs and other chemical products.

Hence, because the movement of the chlorophyll bands on the chromatography paper is dependent on the stationary phase and the mobile phase, the pigment separates different colors when moving the top of the paper.

Learn more about chromatography here.

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Methylene blue can be used to stain DNA because it: (2 pts) forms ionic bonds with DNA changes the pH and therefore the structure of DNA makes DNA electron dense is an effective chemical fixative for cells is none of the above

Answers

Answer: Methylene blue can be used to stain DNA of a cell because it (forms ionic bonds with DNA).

Explanation:

To examine the components of a cell usually under a microscope, a stain or dye is being used to provide a clear and defined view of the area under study.

The deoxyribonucleic acid (DNA) of a cell which contains the hereditary information of the cell is located in the nucleus.

Methylene blue is a type of stain used by biologists which helps them view microscopic life in brilliant color. It is a cationic stain (positively charged blue dye); and binds to negatively charged parts of the cells, such as nucleus (DNA) and RNA in the cytoplasm (with lower affinity).

When DNA of a cell comes in contact with methylene blue on a slide, their opposite charges attract, causing methylene blue's "rings" to slide in between the "rungs" of the DNA "ladder." As a result, a rich blue stain that identifies the location of the cell nucleus can be observed. This produces a photosensitive reaction which can then be viewed under the microscope.

Therefore is can be used to stain the DNA of cell because it forms ionic bonds with DNA.

explain water cycle with the help of diagram​

Answers

Explanation:

The water cycle is defined as a natural process of constantly recycling the water in the atmosphere. It is also known as the hydrological cycle or the hydrologic cycle. During the process of the water cycle between the earth and the atmosphere, water changes into three states of matter – solid, liquid and gas.

hope it helps.stay safe healthy and happy...

What methods help control pollution source

Practicing conservation tillage traps contaminants from Runoff water. Practicing conservation tillage helps prevent BLANK
A. Air pollution
B. Water pollution
C. Soil erosion

Answers

I would assume B as your final
Answer

What is the principle of size exclusion chromatography?​

Answers

Answer:

The underlying principle of SEC is that particles of different sizes elute (filter) through a stationary phase at different rates. This results in the separation of a solution of particles based on size.

hope it helped

Size exclusion chromatography (SEC) separates molecules based on their size by filtration through a gel.

What is size exclusion chromatography?

Size exclusion chromatography (SEC) splits molecules based on their size by filtration via a gel. The gel consists of spherical beads including pores of specific size distribution. Separation happens when molecules of various sizes exist included or excluded from the pores within the matrix.

Size exclusion chromatography exists named gel filtration chromatography because the gel effectively allows for the filtering of molecules from a sample based on molecular size. However, unlike other methods, the larger molecules elute first.

Size-exclusion chromatography (SEC), also understood as molecular sieve chromatography, exists a chromatographic procedure in which molecules in solution exist separated by their size, and in some cases molecular weight. It exists usually applied to large molecules or macro molecular complexes such as proteins and industrial polymers.

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Try this for yourself. Suppose you want to estimate the number of field mice in a small field. One day you capture 500 mice, mark all of them and release them. The next week you capture 200 mice of which 40 were marked by you yesterday. What is your estimate of the population size?

Answers

Answer:

The approximate size of the field mice population is 2500 individuals.

Explanation:

There are different methods to study population density. There are direct methods and indirect methods. Among these last ones, we might find the "Mark-Recapture technique".

The Mark-Recapture technique assumes that the population is closed,  during the sampling season there is no mortality nor natality, marks in the individual last the whole sampling season, and these do not affect the marked individual or their behavior. These marked individuals are randomly distributed in the population, and all the individuals have the same probability of being sampled.

The method consists of capturing a sample of individuals belonging to the population under study, in this case, the field mice population. After capturing the individuals, the researcher marks them and release them again. The third step is to sample again, capture a new amount of individuals, and count how many of them are marked. These marked individuals belong to the first sample. We can calculate the population size by using the Lincoln Index or any other index.

The Lincolns Index states that to obtain the population size, the research must follow the following procedure:

1) Take an initial sample with n1 number of individuals

2) Mark all the sampled individuals and release them

3) Take a second sample with n2 number of individuals

4) Count the number of marked individuals m

To estimate the total number of individuals in this population, N, the following equation must be considered:

N = (n1 x n2)/m

In the exposed example, this is:

• n1= 500 individuals in the first sample

• n2= 200 individuals in the second sample

• m= 40 individuals in the second sample that were previously marked  

             as they were part of the first sample    

N = (n1 x n2)/m = (500 x 200) / 40 = 2500 individuals

The approximate size of the field mice population is 2500 individuals.  

What would be the most likely result if humans stopped burning fossil fuels?

Answers

Answer:

It allows an ozone layers not to be greatly in big holerelease fresh air

Answer:

If human stop burning fossil fuels then the condition and pollution will desperate. There would be more carbon dioxide and less oxygen.

hope it helps you!!!

what precautions should you take to avoid exposure to blood borne pathogens

Answers

Explanation:

The Bloodborne Pathogens standard (29 CFR 1910.1030) and CDC's recommended standard precautions both include personal protective equipment, such as gloves, gowns, masks, eye protection (e.g., goggles), and face shields, to protect workers from exposure to infectious diseases.

Answer:

The Bloodborne Pathogens standard (29 CFR 1910.1030) and CDC's recommended standard precautions both include personal protective equipment, such as gloves, gowns, masks, eye protection (e.g., goggles), and face shields, to protect workers from exposure to infectious diseases.

¿Qué nombres reciben los tejidos que dan
origen a los tejidos adultos de las plantas?
a. Tejidos diferenciados
b. Tejidos indiferenciados (meristemos)
c. Tejidos vegetales

Answers

Answer:

D

Explanation:


Chemical rocks are formed by ____ that grow out of a solution.

Answers

Answer:

crystals

Explanation:

Several genes in humans in addition to the ABO gene (I ) give rise to recognizable antigens on the surface of red blood cells. The MN and Rh genes are two examples. The Rh locus can contain either a positive or a negative allele, with positive being dominant to negative. M and N are codominant alleles of the MNgene. Suppose a child's blood type is B MN Rh(neg). The mother's blood type is O N Rh(neg). Check all of the blood types below that the father could have. (Assume no involvement of the Bombay phenotype; everyone is HH.)
a) O M Rh(neg)O M Rh(neg)
b) B MN Rh(pos)B MN Rh(pos)
c) A M Rh(pos)A M Rh(pos)
d) O MN Rh(pos)O MN Rh(pos)
e) B MM Rh(pos)B MM Rh(pos)
f) B NN Rh(neg)

Answers

Yes yes yes yes nice

Elizabeth was a "granola mom"it was only natural and organic foods and therapies for her
family. She belonged to a food co-op and ordered special foods and home remedies through
the group
Elizabeth was well read and conscientious, and she had a remedy for everything
Little white pills that dissolved under the tongue treated everything from teething to bruising.
When her 8-year-old daughter Samantha had a sore throat, Elizabeth had her gargle with
colloidal silver remedy used before all the new and "dangerous" antibiotics. Samantha did
get over her sore throat, but three weeks later, she broke out in a rash, complained that her
points hurt, and had swollen glands. This worried Elizabeth, and so she consulted a
conventional medical doctor.
Samantha was diagnosed with rheumatic fever, and the doctor prescribed antibiotic treatment.
Elizabeth had read that antibiotics could damage the immune system, and was reluctant to
give them to her daughter
How can you as a nurse, encourage compliance with long-term antibiotie treatment without
abenating Elizabeth? To what extent does a parent have the night to refuse medical advice for
a child? When are alternative therapies helpful?

Answers

Answer and Explanation:

1. As nurses, we can inform you that the use of antibiotics according to medical advice is not dangerous, because the doctor is able to prescribe a correct dose, which must be taken at the correct time intervals, to fight the disease without damaging the immune system . In that case, if the girl takes the medicine exactly as the doctor prescribed, she will have no problems and her body will recover completely.

2. Parents only have the right to refuse medical advice, when such advice is clearly abusive, puts the child at proven risk, or presents experimental treatments without scientific evidence, as it may endanger the child.

3. Alternative therapies are beneficial when they are accompanied by traditional medical treatment, or when they seek to promote relaxation and stress reduction, without trying to fight infections and more serious health problems.

Quick quick !!

Which problem affects the global economy in addition to a local economy?
A. A citywide power outage
B. Drought on an island
C. Water pollution in a lake
D. Pollution of the atmosphere

Answers

Answer:

D. Pollution of the atmosphere

Explanation:

All the other answers would seem to only affect the designated local area. However, option D would affect both the local and global economy.

it is usually measured in m/s​

Answers

Explanation:

The speed of light in vacuum is 299 792 458 meters per second. unit of acceleration is the meter per second per second (m/s2). unit of area is the square meter (m2).

...

Units of Length

10 millimeters (mm) = 1 centimeter (cm)

10 centimeters = 1 decimeter (dm)

10 centimeters = 100 millimeters

10 decimeters = 1 meter (m)

Complete each sentence by dragging each word or phrase to the proper position. Then arrange the sentences into the order of occurrence of motor impulses of the ANS.
1. Action potentials travel along the nerve fiber and enter the__________.
2. Fibers exiting the take one of three routes: the spinal nerve route, the sympathetic nerve route, and the _________nerve route.
3. Arriving at target cells_______ nerve fibers release acetylcholine or norepinephrine into the synaptic cleft.
4. Also known as the________ division, the sympathetic nervous system exits the preganglionic CNS via the spinal nerves from T1-L2.
5. The effect of norepinephrine binding to_______ receptors stimulates cardiac muscle cells. i. postganglionic
ii. sympathetic chain ganglia,
iii. craniosacral
iv. thoracolumbar
v. cholinergic
vi. preganglionic
vii. adrenergic
viii. splanchnic

Answers

Answer:

1. vi. Preganglionic

2. vii. adrenergic

3. ii. sympathetic chain ganglia

4. iii. Craniosacral

5. viii. splanchnic

Explanation:

Action potential travel down preganglionic nerve fibre. They travel towards Vagus Nerve near the effector organ. These impulses arrive at cardiac plexus, which create action potential in postganlianic.

A cell that connects the body to receive the signal from the brain to do the action is called a neuron and the tissue system is called the nervous system.

The answer to the following question is as follows:-

Action potentials travel along with the nerve fiber and enter the Preganglionic Fibers exiting take one of three routes: the spinal nerve route, the sympathetic nerve route, and the adrenergic nerve route. Arriving at target cells sympathetic chain ganglia nerve fibers release acetylcholine or norepinephrine into the synaptic cleft. Also known as the Craniosacral division, the sympathetic nervous system exits the preganglionic CNS via the spinal nerves from T1-L2.The effect of norepinephrine binding to splanchnic receptors stimulates cardiac muscle cells.

Hence, these are the answer to the question.

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Membrane proteins: are sometimes covalently attached to lipid moieties. are sometimes covalently attached to carbohydrate moieties. are composed of the same 20 amino acids found in soluble proteins. diffuse laterally in the membrane unless they are anchored All of the answers are correct.

Answers

Answer: All of the answers are correct.

Explanation:

Membrane proteins are sometimes covalently attached to lipid moieties. They're also composed of the same 20 amino acids found in soluble proteins and diffuse laterally in the membrane unless they are anchored. They're sometimes covalently attached to carbohydrate moieties as well.

Therefore, the correct option is All of the above.

7. The sun's surface is about
a. 2000 °C
b. 3000 °C
c. 4000 °C
d. 5000 °C
(;´༎ຶٹ༎ຶ`)

Answers

Answer:

5778C ...................,.....

i belive the answer is b 300
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Of all the people applying for a certain job 75% are qualified and 25% are not. The personnel manager claims that she approves qualified people 80% of the time, she approves unqualified people 30% of the time. Find the probability that a person is qualified if he or she was approved by the manager The probability is:_______.Type an integer or decimal rounded to four decimal places as needed) I need help ASAP anyone? When should a line graph be used?A. When the independent variable is continuous and shows a causal link to the dependent variable.B. When the independent variable is composed of categories and does not show a relationship.C. When there is no independent variable.D. When the independent variable is continuous and does not show a relationship to the dependent variable. Identify the italicized part of the sentence.The gift that Uncle Roy gave me for my birthday was absolutely perfect!Subjectpredicatedirect objectindirect objectpredicate nounpredicate adjective A 5 ounce bottle of juice cost $1.35 and an 8 ounce bottle of juice cost $2.16 a what is the unit cost per ounce of juice and b what is the better buy Carry oxygen to cells and take carbon dioxide away When John Smith and other European settlers could not find food to eat, what did he tell the Native Americans who lived nearby? He would kill them if they didnt give them food. If two natural numbers are n and (n+3) prove that the differences of their square is an even numbers 10. Fuel oil, gasoline, kerosene and naphtha are four fractions obtained from the fractionaldistillation of petroleum.What is the order of the boiling points of these fractions? Can anyone help with this? Please help it is urgent . 3 adaptive features of amoeba A zookeeper published the following stem-and-leaf plot showing the number of lizards at each major zoo in the country:0123456068880266781266 00102030405060 0000100 622 866 866 870 08 0 Key: 20=2020=202, vertical bar, 0, equals, 20 lizardsHow many zoos have more than 26 lizards What is the value of |6x| - |- 2y| if x = - 3 and y= 5? Describe a character from a story/ film/ TV program.You should say: Who this character is When you first saw/ read about him/ her What kind of person he/she is Why you like him/her Find the area of the parallelogram. Show all your work. What type of sound do the thinnerstrings on a guitar make?A. Higher pitched soundsB. Lower pitched soundsC. Loud soundsD. Quiet sounds If you're running away from a bear, A) both your liver cells and my leg muscle cells will be running glycolysis. B) both your liver cells and my leg muscle cells will be running gluconeogenesis. C) your liver cells will be running gluconeogenesis and your leg muscle cells will be running glycolysis. D) your liver cells will be running glycolysis and your leg muscle cells will be running gluconeogenesis. How many Sodium (NA) Atoms are in Methylene? Help anyone can help me do this question,I will mark brainlest.