Answer:
Biological macromolecules are organic, meaning they contain carbon. In addition, they may contain hydrogen, oxygen, nitrogen, and additional minor elements.
Explanation:
A in Bio last year.
Its because a long spine cacti can reproduce more because it has more survival capacity than the short spine cacti and because of this reason the short spine cacti cannot protect it self because it has a shorter spine that could protect itself from danger.
Out of the choices given, the mechanisms that drives evolution is natural selection. The correct answer is B, natural selection.
<span>When this situation happens you would begin by suspecting an opiate or barbiturate overdose then you would begin mouth-to-mask rescue breathing.</span>
When alleles are recombined during sexual reproduction, they can produce dramatically different phenotypes. Thus, sexual reproduction is a major source of variation within many population. Asexual<span> production is when there is one parent that produces offspring that are identical to the parent. Basically a copy of the parents DNA.
Your answer in short is B
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