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almond37 [142]
4 years ago
14

What is the composition of earths atmosphere

Biology
1 answer:
gogolik [260]4 years ago
7 0

The earth's atmosphere consists mainly of nitrogen and oxygen with smaller proportions of other gases such as carbon dioxide. The amount of carbon dioxide in the atmosphere is maintained through a balance between processes such as photosynthesis, respiration and combustion. However this balance is being affected by human activities which are polluting the atmosphere.

The proportion of these gases in the atmosphere is as follows: nitrogen is the most abundant at 78%, oxygen is next at 21%,  while others  include carbon dioxide at 0.037% and argon at 0.9 % .

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Hope was helpful

If yes than plz ❤️

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A sexually reproducing animal has two unlinked genes (on separate chromosomes), one for head shape (H) and one for tail length (
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Answer:

a) HT

Explanation:

This question shows an animal with two distinct unlinked genes i.e. on different chromosomes. One gene codes for head shape and the other for tail length. The gene for head shape possess alleles H and h, while gene for tail length possess alleles T and t.

According to Mendel's law of independent assortment, the alleles of a gene will separate into gametes independently of the alleles of another gene. This occurs in such a way that each gamete will contain only one allele from a gene.

Based on this principle, an animal with genotype HhTt will undergo meiosis and randomly produce gametes with the following allelic combinations: HT, Ht, hT, and ht. As seen in the gametes, only one allele of a gene occured in a gamete at a time.

Therefore, HT is the genotype possible in a gamete of parent: HhTt.

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What climate conditions occurs during el ninio
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Answer: El Niño is a part of a routine climate pattern that occurs when sea surface temperatures in the tropical Pacific Ocean rise to above-normal levels for an extended period of time.

<h2 />

<em>hope this helps !_!</em>

<h2><u>ENJOY groovie DAY</u></h2>
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Read 2 more answers
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