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Maslowich
2 years ago
10

Jacob described two layers of Earth's atmosphere.

Biology
2 answers:
juin [17]2 years ago
5 0

Answer:

A. Layer A is the troposphere and Layer B is thermosphere

Explanation:

The troposphere is the lowest layer of the atmosphere. THis is where all life life resides and where weather occurs as well. It contains the air we breathe. As we go higher in the troposphere, the temperature goes down.

The thermosphere is part of our atmosphere but it is very high up and considered to be part of outerspace as well. It is heated up by the UV rays and X-rays that it absorbs.

EastWind [94]2 years ago
3 0

Answer:

is a.        the corecct answer

Explanation:

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sashaice [31]

Answer: The correct option is A (chromosome Number is reduced from diploid to haploid)

Explanation:

In sexual reproduction, offspring are produced by fusion of two different sex cells which usually come from two different parents. These sex cells are know as gametes.

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--> the nucleus and cell duplicate ( divide equally) twice.

As a result, the diploid parent cell gives rise to four haploid gamete cells. Therefore the statement "chromosome Number is reduced from diploid to haploid ' is true concerning meiosis I.

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