What was the first eon of the Precambrian?

Archean

Paleozoic

Phanerozoic

Hadean

Answers

Answer 1
The answer is jadean
Answer 2

Answer:

The Hadean was the first eon of the Precambrian.


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A - Berkmar Biology S2 CA4 - AKS 13 / 11 of 24
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Habitat destruction causes issues for many different species because it gives them a smaller area to move around to look for food, shelter, or other resources. Which of the
following would be a possible solution to this problem?
O A Moving all of the animals to one forest away from cities
O
B. Killing all of the animals
O
C. Connecting the forests together
allow animals to move between the forests
O D. Constructing a large wall around the city so the animals and humans are separated

Answers

C is the best solution

A student is studying calcium, a highly reactive element that humans need for strong bones. Which characteristic of calcium is most closely related to its chemical reactivity?

Answers

Explanation:

it's very reactive which helps to make strong bones

5. Explain the genotypes and phenotypes of skin color.

Answers

Human skin color is a polygenic trait, which means that multiple gene loci (with different alleles) are involved in its expression. Because of this, there is an enormous number of possible genotypes for the skin color and as a result, the phenotypes vary from the darkest brown to the lightest hues.

Hope this helped my darling!

For this assignment, you will ask questions about the factors that have caused a rise in global
temperatures over the past century. Then, you will conduct research to answer your questions. You will
also graph provided information, analyze the graphs, and make conclusions based on the graphs. Finally,
you will write a paper describing the conclusions of your research and graphs.
Background Information
Global temperature change is a gradual increase in the overall temperature of the Earth's atmosphere.
Both human activity and natural processes have contributed to this temperature increase. Examples of
human activities include the burning of fossil fuels, cement production, and agricultural activity. Examples
of natural processes include changes in incoming solar radiation and volcanic activity.
Scientists present evidence for the rise in global temperature in the form of tables, graphs, maps, and
models. For example, scientists build climate models (computer simulations of climate systems) to
explore the causes and effects of global temperature change and to predict future trends. These models
predict that the Earth’s average surface temperature will rise as greenhouse gas concentrations continue
to rise. Based on these models, scientists predict that average surface temperatures could rise by
between 2°C and 6°C by the end of the 21st century.

All I need is the graph

Answers

My project is in the file attached, lots of thanks to Maxineishere for helping me with the essay. You may need adobe reader for this as the files are PDF files, I hope you are satisfied! :)

DATE ANSWERED: 5/8/2021

Why are cells of different shapes and sizes? Give suitable examples.

Answers

Answer:

Some cells are different shapes as they have different ways of attempting to pass through the immune system they are different sizes as some of them want to make sure that the white blood cells cannot swallow them as easily at that point antitoxins are released to break them down

Explanation:

I'll mark brainliest...
Give the scientific term for each of the following descriptions.

2.1 The phase in which chromatids are separated
2.2 The phase where chromatids are formed
2.3 Plant tissue responsible for mitosis
2.4 The stage of cell division in which the DNA is copied
2.5 The cellulose structure that divides a plant cell into two during telophase
2.6 The two structures that make up a centrosome

Answers

Answer:

2.1: Anaphase

2.2: synthesis phase

2.3: Meristematic tissue

2.4: Interphase

2.5: cleavage furrow

2.6:  pericentriolar material

Explanation:

Solar panels generate electricity using photovoltaic cells that receive sunlight. To protect these cells from moisture while allowing sunlight to pass through, engineers must design a cover for the solar panel that is—

Answers

Answer:

waterproof and transmits light.

Explanation:

Answer:

Photovoltaic

Explanation:

It must be able to allow the electric flow because it must allow the electricity through that cover.

What will most likely occur if population density increases in a population that is density dependent?

Birthrate will decrease.
Carrying capacity will increase.
Death rate will decrease.
Immigration will increase.

Answers

Answer:

D

Explanation:

Population density is the number of individuals in a unit square area. As if population density increases in a population that is density-dependent, will increase immigration, i.e., option D.

What is immigration?

Immigration is a process by which individuals become residents of another country permanently.

The process of immigration is of great importance for social, economic, and culture of states.

As population density increases in a population that is density-dependent immigration will also increase.

Thus, the correct option is D.

For more details regarding immigration, visit:

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A Three-leaf clover is dominant (T) to four leaves (t). What is the probability of an offspring having 4 leaves when you cross a heterozygous clover with a four-leaf clover?
O 25%
O 50%
O 75%
O 0%

Answers

Answer:

%50

Explanation:

Heterozygous = 2 different alleles (Tt)

4 leaf clover = 2 recessive alleles (tt)

T is dominant over t, so with the combination of Tt three leaves are expressed, rather than four leaves

For a recessive trait (four leaves) to show 2 recessive alleles are needed

To find the percentage of the offspring to have four leaves a punnet square should be created

To find the percentage divide the number of four leaf offering with 4 and multiply by 100

2÷4×100=50

= 50%

It might be unhelpful to repeat the answer but it is B. 50%

Reflection Question: Explain the relationship between photosynthesis and cellular respiration. Be sure to
include the main purpose of both and where they occur inside the cell.

Answers

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. ... While photosynthesis requires carbon dioxide and releases oxygen, cellular respiration requires oxygen and releases carbon dioxide. It is the released oxygen that is used by us and most other organisms for cellular respiration.
hope this helps you and plz mark this answer as brainliest answer.


Data

Record the glucose meter reading in the table below for each of the trials.

Please note that blood glucose levels will vary from person to person, and the levels given here are examples only. The levels given for the person with type 1 diabetes are assuming that no extra insulin was injected to account for the carbohydrate intake.




Subject A (without diabetes)

Food type

Starting blood glucose level (mg/dL)

Blood glucose level after 1 hour (mg/dL)

Blood glucose level after 2 hours (mg/dL)

Blood glucose level after 3 hours (mg/dL)



100









100









100









100










Subject B (with type 1 diabetes)

Food type

Starting blood glucose level (mg/dL)

Blood glucose level after 1 hour (mg/dL)

Blood glucose level after 2 hours (mg/dL)

Blood glucose level after 3 hours (mg/dL)



100









100









100









100

Answers

Answer:

The North produced 17 times more cotton and woolen textiles than the South, 30 times more leather goods, 20 times more pig iron, and 32 times more firearms. The North produced 3,200 firearms to every 100 produced in the South.

Explanation:

Subject A = The blood glucose level will decrease after 3 hours

Subject B = The blood glucose level will stay the same after 3 hours

I'm not sure about the rest...

In meiosis, 2 cells have been created at the end of telophase 1, halfway through the process. These cells are said to exist in a haploid state with a diploid number. Explain the statement. Support your answer clearly

Answers

Answer:

In some species, cells enter a brief interphase, or interkinesis, before entering meiosis II. Interkinesis lacks an S phase, so chromosomes are not duplicated. The two cells produced in meiosis I go through the events of meiosis II in synchrony. During meiosis II, the sister chromatids within the two daughter cells separate, forming four new haploid gametes. The mechanics of meiosis II is similar to mitosis, except that each dividing cell has only one set of homologous chromosomes. Therefore, each cell has half the number of sister chromatids to separate out as a diploid cell undergoing mitosis.

Prophase II

If the chromosomes decondensed in telophase I, they condense again. If nuclear envelopes were formed, they fragment into vesicles. The centrosomes that were duplicated during interkinesis move away from each other toward opposite poles, and new spindles are formed.

Prometaphase II

The nuclear envelopes are completely broken down, and the spindle is fully formed. Each sister chromatid forms an individual kinetochore that attaches to microtubules from opposite poles.

Metaphase II

The sister chromatids are maximally condensed and aligned at the equator of the cell.

Anaphase II

The sister chromatids are pulled apart by the kinetochore microtubules and move toward opposite poles. Non-kinetochore microtubules elongate the cell.

Figure 1. The process of chromosome alignment differs between meiosis I and meiosis II. In prometaphase I, microtubules attach to the fused kinetochores of homologous chromosomes, and the homologous chromosomes are arranged at the midpoint of the cell in metaphase I. In anaphase I, the homologous chromosomes are separated. In prometaphase II, microtubules attach to the kinetochores of sister chromatids, and the sister chromatids are arranged at the midpoint of the cells in metaphase II. In anaphase II, the sister chromatids are separated.

Telophase II and Cytokinesis

The chromosomes arrive at opposite poles and begin to decondense. Nuclear envelopes form around the chromosomes. Cytokinesis separates the two cells into four unique haploid cells. At this point, the newly formed nuclei are both haploid. The cells produced are genetically unique because of the random assortment of paternal and maternal homologs and because of the recombining of maternal and paternal segments of chromosomes (with their sets of genes) that occurs during crossover. The entire process of meiosis is outlined in Figure 2.

Figure 2. An animal cell with a diploid number of four (2n = 4) proceeds through the stages of meiosis to form four haploid daughter cells.

Which of the following processes causes
sinkholes to form?
A. erosion of sediment by runoff
B. deposition of sediment by a river
C. deposition of calcite by groundwater
D. erosion of limestone by groundwater

Answers

Answer:

A. erosion of sediment by runoff

Explanation:

The formation of sinkholes involves natural processes of erosion or gradual removal of slightly soluble bedrock (such as limestone) by percolating water, the collapse of a cave roof, or a lowering of the water table. Sinkholes often form through the process of suffosion.

Answer:

A sinkhole is a hole in the ground that forms when water dissolves surface rock. Often, this surface rock is limestone, which is easily eroded, or worn away, by the movement of water. ... Water collects in these collapsed sections, forming sinkholes. Sinkholes also form when the roofs of caves collapse.

que sistemas artificiales utiliza el hombre para recoger agua que sistemas existen de forma natural

Answers

Answer:

Haciendo almacenamiento y excavación en un área grande, mientras que los estanques son los sistemas utilizados para recolectar agua.

Explicación:

El sistema artificial que el hombre usa para recolectar agua es la construcción de un gran almacenamiento de concreto y la excavación de un gran terreno que recolecta agua de lluvia y puede ser utilizado por la gente para su uso diario, mientras que por otro lado, los estanques son el sistema natural donde el agua del la lluvia se acumula naturalmente. Esta agua es utilizada por la población que vive alrededor de ese estanque. Ambos sistemas proporcionan agua para el uso diario, como lavar, beber y cocinar, etc.

_______________, such as bacteria, breakdown dead organisms and release nutrients back into the soil.
A. Producers

B. Decomposers

Answers

Answer:

B. Decomposers

Explanation:

i hope this helps ;)

Decomposers,such as bacteria, breakdown dead organisms and release nutrients back into the soil.

Environmental impact that have led to gray wolfs adaptation

Answers

Answer:

what are you asking?

Explanation:

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!

Answers

Answer:

New moon to full moon: waxing crescent, first quarter, waxing gibbous,

Full moon to New moon: Waning gibbous, Third quarter, Waning crescent,

Explanation:

Answer:

Going from a New Moon to a Full Moon: Waxing Crescent, First Quarter, Waxing Gibbous

Going from a Full Moon to a New Moon: Waning Gibbous, Third Quarter, Waning Crescent

Explanation:

Mediterranean forests, dry woodlands, and shrublands often have plants called sclerophytes living in them. What adaptation do these plants have that help them survive in this biome?

Answers

Answer:

he special characteristics that enable plants and animals to be successful in a particular environment are called adaptations. Camouflage, as in a toad's ability to blend in with its surroundings, is a common example of an adaptation. The spines on cycad leaves, keep animals from eating them.

Explanation:

Plants adapt to their environment from necessity. Plants may also adapt by growing lower and closer to the ground to shield themselves from wind and cold. Desert environments may have some of the following adaptations, these help the plant to conserve food, energy and water and still be able to reproduce effectively.

How does human consumption of limited resources impact the biosphere? 1 paragraph

Answers

Answer:

Human use of land has negative impacts. Human activities contribute to the erosion and pollution of beaches. ... More of the rainwater runs off leading to increased erosion and drier soil. Deforestation of land can also lead to desertification and a loss of biodiversity.The burning of fossil fuels and the growth of animal agriculture has led to large amounts of greenhouse gases (such as carbon dioxide and methane) in the atmosphere. Higher concentrations of greenhouse gases trap more heat in the biosphere and result in global warming. In turn, this drives climate change.Humans affect the quality, availability, and distribution of Earth's water through the modification of streams, lakes, and groundwater . ... The activities of humans have significantly altered the biosphere , changing or destroying natural habitats and causing the extinction of many living species.

Explanation: (:

The SWAG scientist wrote this description (in the picture below) of a cell after looking at it under the microscope. Which type of cell was the student most likely describing?



answers:

Animal cell


Bacterial cell


Plant cell


Prokaryotic cell

Answers

Answer:

I think bacterial cell becausea microscope look into small organisms that we can't see with a naked eye

¿Qué función cumplen las vitaminas?, Nombra al menos 4 de ellas
indicando que función cumplen, cuál es su estructura química y en que
alimentos pueden encontrarse?

Answers

Answer:

i'm sorry but I don't understand

HELP ASAP!!NO LINKS OR UNRELATED ANSWERS (I WILL REPORT YOU IF YOU DO)
Muscle cells make up about ____________ of your body mass.

A. a quarter

B. half

C. three quarters

Answers

Answer:

I'd say B. Muscles make up about 40% of the body so the cell amount should be even.

which statement is not part of cell theory ?

Answers

Answer:

option (C) is your answer

I hope it's helps you

Answer:

C.

Explanation:

I am so sorry if I'm the wrong answer.

What happens during cytokinesis?

Answers

Answer:

Explanation:

Cytokinesis is the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells The contractile ring shrinks at the equator of the cell, pinching the plasma membrane inward, and forming what is called a cleavage furrow

Answer: Cytokinesis is the physical process of cell division, which divides the cytoplasm of a parental cell into two daughter cells. ... The contractile ring shrinks at the equator of the cell, pinching the plasma membrane inward, and forming what is called a cleavage furrow.

Explanation:

14. Scientists have found fossils of tropical plants in Antarctica. How could tropical plants
have grown in Antarctica?
a.At one time , earths entire surface was a tropical forest
b.At one time , Antarctica was located closer to the equator
c.Catastrophic volcanic eruptions melted the ice and exposed the soil to sunlight

Answers

answer choice b is correct

hope this helps :)

Which of the following can NOT be cloned?
a. A dog
b. A rock
c. A bacterium
d. DNA

Answers

it’s either dog cause dna could be cloned

Do any varieties of cyanobacteria living today produce stromatolites?
A: Yes
B: No

Answers

Yes. I just looked it up

Answer: yes

Explanation:

Stromatolites, also known as layered rocks, form in shallow waters when biofilms of living microorganisms, like cyanobacteria, trap sediment. Most stromatolites grow in extremely salty lagoons or bays, in places like Australia, Brazil, Mexico and the Bahamas.May 30, 2013

I need help, please.

Answers

Answer:

Explanation:

I dont get the question its just a chart

The population of Dubai at the end of 2012 was 2.1 million. This was predicted to increase at a rate of 6% each year. Calculate the predicted population of Dubai at the end of 2015​?
Mathematics

Answers

Answer:

2.1×0.06^3= the correct answer

Explanation:

using a compound formula used for interest u can use this to see how the population is increasing by multiplying the principal×rate^time

Answer:

Population at the end of 2015 is 2.5 million.

Explanation:

Population of Dubai at the end of 2012 is 2.1 million.

Rate of increase of population is 6%

Population at the end of 2013 is 2.1 million +(6% of 2.1 million) =2.226 million.

Population at the end of 2014= 2.226 million + 6% of 2.226 million = 2.35956 million.

Population at the end of 2015 is = 2.35956 million + 6% of 2.35956 million = 2.5 million.

Hope this answer helps you :)

Have a great day

Mark brainliest

Whích DNA strand is complementaryto the DNA strand TAC CTA AGT GCA

A. ATG GAT TCA CGT
B. GTA TAG ACT TGC
C. GGG CAG CAG GAT
D. TCA CGT GAT ATG

Answers

Answer: A

Explanation:

G is opposed to C

And C is opposed to G

T is opposed to A

And A is opposed to T

Answer: is A Explanation :this oposited the DNA and the component germen
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