Answer: the discovery of a buried crater (about 200 km across) near Chicxulub, Mexico
The discovery of a buried crater (about 200 km across) near Chicxulub, Mexico.
What is extinction?
Extinction is defined as the disappearance of an organism or a group of organisms as a result of environmental factors or changes in the members' evolutionary processes.
It can also be defined as an evolutionary process that causes a species or population to go extinct.
When there are no longer any living members of a certain animal or plant species anywhere in the globe, the species has become extinct.
Generally speaking, species disappear for the following reasons:
Genetic and demographic phenomena.Habitat destruction in the wild.Species introduction that are invasive.Global warmingHunting and illicit trade.Thus the discovery of a buried crater (about 200 km across) near Chicxulub, Mexico.
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Identify the correct bonding between nitrogen bases in DNA molecule from given pair.
a. A=C
b. A=G
c. A=U
d. A=T
Answer:
It's not A or B. I hope that helps you a bit.
Explanation:
Answer:
A=T is the correct bonding between nitrogen bases in DNA molecule
HELP
In humans, ventilation, digestion, and blood flow are important biological processes. Explain the relationship between the structure of tissues or organs and one of these processes.
Answer:
I am assuming the question is asking how do the processes relate to one another.
Explanation:
Ventilation happens in the lungs, where carbon dioxide and oxygen are exchanged in the alveoli. This is done via cappilaries that surround the alveoli. Cappilaries are small blood vessels, which are collecitelvy part of the blood flow system (circulation) of the body. In reguards to the digestion, there are capillaries in the vili (which are tiny finger-like structures) so that they can pick up the nutrients during digestion. Another way blood flow and digestion are connected is because the stomach is a muscle, thus is moves and requires energy. That energy comes from the oxygen and nutrients that is supplied by the blood. These are just some examples.
How does coronavirus causes severe pneumonia?
Answer:
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Explanation:
The new coronavirus causes severe inflammation in your lungs. It damages the cells and tissue that line the air sacs in your lungs. These sacs are where the oxygen you breathe is processed and delivered to your blood.
Answer:
The new coronavirus causes severe inflammation in your lungs. It damages the cells and tissue that line the air sacs in your lungs. These sacs are where the oxygen you breathe is processed and delivered to your blood. The damage causes tissue to break off and clog your lungs
Explanation:
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ayudaa por fa es para mañana
teniendo en cuenta la lectura uno de los métodos más rápidos económicos y eficaces para eliminar las bacterias del agua es la
A. desinfección
B. esterilización
C. cloración
D. inmunización
Diane Dodd raised different fruit fly populations on different food sources. She found that after about 40 generations the evolution of reproductive isolation was under way. The mechanism of evolution responsible for this was Group of answer choices
Answer:
Natural selection.
Explanation:
Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.
Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.
In this scenario, the mechanism of evolution responsible for this was natural selection because after about 40 generations the evolution of reproductive isolation was under way for the fruit fly. Thus, the more the offsprings that are reproduced by the parent organism, the more likely are they to survive.
Additionally, there is a better chance of having good or beneficial traits being passed from the parent organism to her offsprings.
escribe las clases de tejido parenquimatoso y la función de cada uno
Answer:Parénquima vascular: protege los tejidos conductores (xilema y floema) de la planta. Parénquima de relleno: ocupa el resto del espacio, con el fin de "rellenar". La principal característica es que las células son más o menos isodiamétricas (poseen el mismo diámetro).
Explanation:
how does the energy of the reactants and products differ between an energy absorbing reaction and an energy releasing reaction
The mass of the products is larger than the concentration of the reactants in an energy absorption process.
The power of the reaction mixture is larger than the radiation of the outputs in an energy-releasing process.
As substances disrupt bonds, energy released, and then when outputs make new bonds, release energy.
Exothermic processes release energy, whereas endothermic reactions consume it. There is no general change in the quantity of energy throughout a chemical process, whether it collects or releases it.
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explain the systemic circulation
Explanation:
Systemic circulation is also called general circulation in these circulation the oxygenated blood from the aorta moves towards the whole body (to each and every organ).
The aorta is divided into ascending and descending aorta. The ascending aorta supplies oxygenated blood to ascending or upper body parts and descending aorta supplies oxygenated blood to descending or downward body parts.
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Does skeletal connective tissue have nucleus?
Answer:
Fibroblasts are the most common cell type of connective tissue. They produce both fibers and amorphous ground substance. Typically only the oval nuclei are visible. ... In the tendon, fibroblasts are seen as elongate nuclei found sandwiched between collagen fibers .
which compound will be the first to contain the c14 in light independent phase of photosynthesis
Answer:
The Calvin cycle, light-independent reactions, bio synthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis are the ...
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write short note on IVF
Answer:
In vitro fertilization (IVF) is a type of assistive reproductive technology (ART). It involves retrieving eggs from a woman's ovaries and fertilizing them with sperm. This fertilized egg is known as an embryo. The embryo can then be frozen for storage or transferred to a woman's uterus.
Answer:
IVF YOU MEAN 4 F?????????
11. Choose the best answer.
A spore is a reproductive structure that contains a haploid cell and
a food supply
a style
a protective coating
a diploid cell
a protective coating. spores do not have stored food supplies, they are a haploid cell
Write the different function of different type of teeth.
Answer:
to help break down food.
help in digestion due to enzymes.
D is wrong what is the right answer
InformationHow did
the discovery of isotopes disprove one part of
Dalton's atomic theory
Answer: Because Daltons theory states all atoms of a given element are identical in mass and properties.
Explanation:
The discovery of isotopes demonstrated that atoms of the same element can have different atomic weights, implying that atoms of the same element are not identical in every way.
What is Dalton's atomic theory?Dalton's atomic theory postulated that matter is made up of indivisible particles known as atoms, and that atoms of the same element are all identical and cannot be created or destroyed.
Compounds are formed by the simple combination of atoms into compound atoms.
Dalton, John Experiments with gases became possible at the turn of the nineteenth century, prompting John Dalton to propose a modern theory of the atom based on certain assumptions.
Dalton's theory is debunked. This is because Dalton's theory states that all matter is made up of identical, indivisible, and indestructible atoms. Isotopes have the same element but a different number of neutrons.
Thus, this way, the discovery of isotopes disprove one part of Dalton's atomic theory.
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A ball is launched from the ground with a horizontal speed of 30 m/s and a vertical speed of 30 m/s. What is the ball’s horizontal acceleration at the top of its trajectory?
A. 10 m/s/s
B. 30 m/s/s
C. 15 m/s/s
D. 0 m/s/s
The factor(s) that most affect the gravitational force between two objects are:
A. mass and distance
B. density and distance
C. mass and size
D. density and size
What comes out of the bottom of a space shuttle?
A. Lava
B. Hot gas
C. Plasma
D. Water
A 1,500 kg truck drives at 20 m/s. How much kinetic energy does it have?
A. 450,000 J
B. 3,000,000 J
C. 30,000 J
D. 300,000 J
A bicyclist moves at a constant speed of 4 m/s. How long it will take for the bicyclist to move 36 m?
A. 9 s
B. 18 s
C. 12 s
D. 6 s
Why is friction useful between your feet and the ground?
A. It's not useful
B. Wears away your sneakers
C. Slows you down
D. So you don't fall over
What is the unit for kinetic energy?
A. Kg
B. N
C. Joules
D. N/m
If Vector A is (6, 4) and Vector B is (-2, -1), what is the resultant?
A. (4,5)
B. (4,3)
C. (8,5)
D. (8,3)
Your initial speed is zero. If you increased your speed by 4 m/s after only 2 seconds and continue to accelerate at the same rate, what will your speed be after 10 seconds?
A. 30 m/s
B. 40 m/s
C. 10 m/s
D. 20 m/s
You cover 750 m in 25 seconds. What is your speed?
A. 25 m/s
B. 30 m/s
C. 35 m/s
D. 40 m/s
The same net force is applied to object A and object B. The observed accelerations of the two objects are not the same; object A has an acceleration three times that of object B. Which of the following is correct?
A. Object A has one-third the mass of object B.
B. Object A has three times the mass of object B.
C. Object A has more friction than object B.
D. Object A has a different, less streamlined shape than object B.
Is friction acting on a moving ship useful?
A. No
B. Yes
C. Not sure
D. Maybe
A 12 kg ball is held 2 m above the Earth. How much GPE does it have?
A. 24 J
B. Not enough info
C. 240 J
D. 144 J
A car travels south at 30 m/s for 5 minutes. What is its velocity?
A. 30 m/s South
B. 30 m/s
C. 300 m/s South
D. 300 m/s
An object maintains its state of motion because of
A. Inertia
B. Momentum
C. Force
D. Acceleration
If I double the spring constant of a spring, what happens to its EPE if stretched the same distance?
A. Halves
B. Disappears
C. Not enough info
D. Double
If I were to take a ball to the moon, where gravity is 1/6th that on the Earth, what will happen to its GPE if I hold it at the same height both places?
A. 1/6th as much
B. Disappear
C. Not enough info
D. 6 times as much
A 40 kg bike traveling down the road has a negative acceleration. What is true of the force?
A. It is positive
B. It is zero
C. It doesn't exist
D. It is negative
Forces that act together are called what type of pairs?
A. Left-right
B. Happy-sad
C. Action-reaction
D. Up-down
A satellite’s original velocity is 10,000 m/s. After 60 seconds it’s going 5,000 m/s. What is the acceleration?
A. -83 m/s2
B. -250 m/s2
C. 83 m/s2
D. 250 m/s2
If the sun were more massive, what would happen to Earth’s gravity with the sun?
A. increase
B. would be 0
C. would be infinite
D. decrease
The amount of matter in an object is called its
A. Force
B. Mass
C. Balance
D. Weight
An object with a mass of 15 kg has an acceleration of 4 m/s2, what is the resultant force?
A. 19 N
B. 3.75 N
C. 600 N
D. 60 N
How long does it take me to travel 500 m at a speed of 50 m/s?
A. 10 s
B. 25,000 s
C. 15 s
D. 2500 s
Where is amyglada located in a brain ? How does it function ?
Short Answer: The amygdala is located in the brain and its functions are related to emotional learning.
Explanation
The amygdala is a brain structure located in the temporal lobe of the brain. Its functions are related to the emotional system of the brain, and memory. In addition, the amygdala has been shown to influence the emotional learning process. The amygdala is mainly responsible for the formation and storage of memories associated with emotional events, so external sensory stimuli reach the basolateral group of the amygdala, where associations are formed with memories of the stimulus (mainly related to fear).
Competitive divers pull their limbs in and curl up their bodies when they do flips. Just before entering the water, they fully extend their limbs to enter straight down. Explain the effect of both actions on their angular velocities. Also explain the effect on their angular momenta.
Answer:
whats an angular momenta ?
Explanation:
help can be needed please!
The correct answer is A. Plastic trash in the neighborhood park.
Explanation
The tragedy of the commons was a term used by Garrett Hardin to describe a situation in which several individuals motivated by personal interests destroy or undermine a common good even though none of them is convenient for this. Outcome. According to the above, the correct answer is A. "Plastic trash in the neighborhood park", because this describes the result of an individual action of several people, which is to throw garbage in the park and that as a result causes general damage in the community.
Los hámsteres tienen 22 cromosomas y sus células haploides. ¿Cuántos cromosomas hay en su célula diploide heredera?
Answer:
El hámster Sirio posee 44 cromosomas (22 pares de cromosomas) en sus células somáticas diploides, mientras que el hámster chino posee 22 cromosomas (11 pares de cromosomas) en sus células somáticas diploides
Explanation:
Un individuo es haploide (n) cuando sólo posee un juego de cromosomas en el núcleo celular, mientras que un individuo es diploide (2n) cuando posee dos juegos de cromosomas. En general, los organismos pluricelulares diploides poseen dos tipos tipos de células: 1-germinales (gametos) haploides y 2-células somáticas diploides. El hámster Sirio posee 22 pares de cromosomas, es decir 44 cromosomas (2n=44) en sus células somáticas diploides y 22 cromosomas en sus células germinales haploides, es decir, en sus óvulos (gametos femeninos) o espermatozoides (gametos masculinos) cuya fusión durante el proceso de fertilización da lugar a un cigoto diploide. Por otra parte, el hámster Chino, el cual se considera un organismo modelo en citogenética, posee 22 cromosomas en sus células diploides (2n=22) y 11 cromosomas (n=11) en sus células haploides.
3. What is one thing that can be done to help improve areas that produce a lot of runoff?
Answer: hi, im here to help :3
so, you can either use plants, use pesticides and fertilizers less often or the one thing i know is consider a rain barrel.
Name the electrolyte in the electrolysis of sodium chloride solution
Answer:
Sodium metal and chlorine gas can be obtained with the electrolysis of molten sodium chloride. Electrolysis of aqueous sodium chloride yields hydrogen and chlorine, with aqueous sodium hydroxide remaining in solution.
Answer:
Molten sodium chloride
Cathode: Na+(aq) +e ….>Na(s)
Anode: 2Cl-(aq) +2e…..>Cl2(g)
Sodium chloride solution.
Cathode: 2H-(aq) + 2e…>H2(g)
Anode:4OH-(aq)…>2H2O(l)+O2(g)
Which of the following statements is NOT true?
A. Mutations can be harmful.
B. Mutations are important to evolution.
C. Mutations can be beneficial.
D. Mutations are not part of evolution
describe the process of digestion in a person who had beans for lunch time
Answer:
The processes of digestion include six activities: ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and defecation. The first of these processes, ingestion, refers to the entry of food into the alimentary canal through the mouth.
Lactase is a human enzyme that catalyses the breakdown of lactose in milk.
At which temperature does lactase work faster?
A 0°C
B 18°C
C 37°C
D 100°C
Answer:
Maybe 37°C
Explanation:
Because at 100°C enzyme gets denatured so maybe its 37°C .
I hope it's Right if not then advance sorry :)
do you think that the life of elderly people suffering from diabetes mellitus should be extended by giving them artificially produced insulin
Explanation:
The prevalence of type 2 diabetes is increasing among older adults as is their diabetes-related mortality rate. Studies suggest that tighter glucose control reduces complications in elderly patients. However, too low a glycosylated hemoglobin (HbA1c) value is associated with increased hypoglycemia. Moreover, the appropriateness of most clinical trial data and standards of care related to diabetes management in elderly patients is questionable given their heterogeneity. Having guidelines to safely achieve glycemic control in elderly patients is crucial. One of the biggest challenges in achieving tighter control is predicting when peak insulin action will occur. The clinician’s options have increased with new insulin analogs that physiologically match the insulin peaks of the normal glycemic state, enabling patients to achieve the tighter diabetes control in a potentially safer way. We discuss the function of insulin in managing diabetes and how the new insulin analogs modify that state. We offer some practical considerations for individualizing treatment for elderly patients with diabetes, including how to incorporate these agents into current regimens using several methods to help match carbohydrate intake with insulin requirements. Summarizing guidelines that focus on elderly patients hopefully will help reduce crises and complications in this growing segment of the population.
Dental plaque Group of answer choices anchors teeth to their bony sockets. is calcified organic matter on the surface of teeth. protects teeth from bacteria-induced tooth decay. forms a bone-like protective layer. consists of food particles trapped in a sticky matrix.
Explanation:
dental plaque consists of food particles trapped in a sticky matrix.
I hope this helps
Choices:
Why are reflex actions rapid and automatic? *
1. They do not go to the brain.
2. They do not go to the spinal cord.
3. They involve the conscious part of the brain.
4. They do not involve the conscious part of the brain.
Answer:
4. They do not involve the conscious part of the brain.
Explanation:
A reflex action follows this general sequence and does not involve the conscious part of the brain.
Các tuyến nào sau đây được gọi là các tuyến pha?
Answer:
tuyến tụy, tuyến sinh dục
Explanation:
Why could the change in the tilt of Earth cause temperatures on
Earth to change?
The change in the tilt of the Earth can affect the distribution of sunlight and thus influence temperatures on Earth.
Earth's tilt and temperatureThe tilt of the Earth, known as obliquity, affects the distribution of sunlight and influences temperatures.
A greater tilt leads to more pronounced seasons, with hotter summers and colder winters, while a lesser tilt reduces the seasonal contrast. These changes occur over long timescales.
However, short-term climate variations are primarily influenced by factors like greenhouse gases, ocean currents, and atmospheric circulation patterns.
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