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gayaneshka [121]
3 years ago
10

PLS HELP IVE BEEN ASKING FOR 2 DAYS OML NOBODY WILL HELP ;( ME GO CRY

Biology
2 answers:
ruslelena [56]3 years ago
8 0

Answer:

A.

Explanation:

Bc the rest are not reasonable

crimeas [40]3 years ago
8 0

Answer:

A. to maintain desirable traits

Explanation:

I'm positive that this is correct

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A metal in group 16 of the periodic table can become a chemically stable ion by
vova2212 [387]

Answer : A metal in group 16 of the periodic table can become a chemically stable ion by gaining 2 electrons.

Explanation :

The group 16 element are oxygen, sulfur, selenium, tellurium and polonium.

The general electronic configuration of group 16 elements is, ns^2np^4

As we now that there are total 6 electrons in p sub-shell. So, a metal in group 16 can become a chemically stable ion by gaining 2 electrons.

M+2e^-\rightarrow M^{-2}

Hence, a metal in group 16 of the periodic table can become a chemically stable ion by gaining 2 electrons.

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The cells of a mature pea plant have 10 chromosomes. How many chromosomes does a nucleus in the pea endosperm contain
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Answer:

15 chromosomes

Explanation:

The endosperm is formed through double fertilization where one male gamete nucleus with polar nuclei to form a triploid nucleus called the primary endosperm. The endosperm therefore will contain 15 chromosomes since the polar nuclei is diploid and the male gamete is haploid forming a triploid nucleus.

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The recycling of which compound ensures the continuation of glycolysis under anaerobic conditions?
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Recycling of pyruvic acid
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Describe why certain traits increase in frequency in a population. Provide ONE example to support your response.
lidiya [134]

Answer:

When a phenotype produced by certain alleles helps organisms survive and reproduce better than their peers, natural selection can increase the frequency of the helpful alleles from one generation to the next – that is, it can cause microevolution.

Explanation:

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