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dexar [7]
3 years ago
12

Why wasnt Oxidation chemical weathering common 2 billion years ago

Biology
1 answer:
Iteru [2.4K]3 years ago
3 0

Answer:

Oxygen levels were a lot lower then

Explanation:

2 billion years ago was before the Great Oxidation Event. The first oxygen-producing cyanobacteria did not exist before then. Without oxygen, oxidation cannot be common.

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Small in animal cells , large in plants cells,storage in animal cells,maintains shape in plant cells , the phrases above describ
Snowcat [4.5K]

Answer:

vacuole

Explanation:

the vacuole is bigger in the plant cells but small in animal cells,and gives shape to the plant cells by holding them firm and in shape

6 0
4 years ago
El límite en la cantidad de moléculas no solubles en lípidos que entran a la célula por segundo es una consecuencia de
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la ósmosis, la difusión simple, la difusión facilitada y el transporte activo son mecanismos que permiten la entrada y salida de sustancias a través de la membrana celular

3 0
3 years ago
Explain how the independent alignment of homologs, and also crossing-over during the first meiotic division, each contribute to
BartSMP [9]

Answer: Homologous chromosomes are randomly distributed to daughter cells, this means different chromosomes segregate independently of each other. And they exchange segments of DNA during crossing over. This recombination creates genetic diversity because genes from each parent are exchanged.

Explanation:

Meiosis is a type of cell division that produces gamete cells, which are sex cells (egg and sperm)

Chromosomes that form a pair and are found together are called homologous chromosomes, and they are inherited from each parent. During prophase of meiosis I, the homologous chromosomes exchange segments of DNA in a process called crossing over. This recombination creates genetic diversity because genes from each parent are exchanged. <u>It results in new combinations of genes on each chromosome.</u>

After that, during the anaphase of meiosis I, the two chromosomes line up on the equatorial plane of the cell. Then, they are separated and each will go to a new daughter cell. So homologous chromosomes are randomly distributed to daughter cells, <u>this means different chromosomes segregate independently of each other.</u>

3 0
3 years ago
Which statement comparing examples of renewable and nonrenewable resources is true? A. Solar energy is a renewable resource beca
Hatshy [7]
The answer is A. <span>Solar energy is a renewable resource because it can't be used up, but oil is a nonrenewable resource because it will eventually run out.</span>
5 0
3 years ago
Recalling what you have learned about cells, you marvel at the ability of these tiny things to support their life functions. You
kramer

Hi!

Recalling what you have learned about cells, you marvel at the ability of these tiny things to support their life functions. You then remember that they could not easily get much bigger without drastic changes. Explain why cells are so small, considering the relationship between surface area and volume for objects of different sizes but similar shapes.

Answer:

The reason cells are so small is because the fact that they need to diffuse through other materials more efficiently.

3 0
3 years ago
Read 2 more answers
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