I'm not entirely sure on this one... But I think it's 1. cell division helps animals repair old cells..
like please
Answer:
C. Prevents sir pollution
Explanation:
Because when cars a running they produce fumes which pollute our air. Also that is a car electric charger
Answer:
Genetic variability refers to a species's genetic variation as a whole. Specific changes in DNA fragments or genes are referred to as genetic variants, and each mutation of a gene is referred to as an allele.
Explanation:
Hope this helps!
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What do you mean <span>It has been observed that certain species of insects which had not previously caused significant harm have become serious pests. the best explanation for this phenomenon is that the pesticide killed off predators which had previously held this species in check. a mutation occurred in the species. the pesticide increased the vigor of the species. was able to be used by the pest as an additional food source is also a reproductive for some insect species. </span><span />
I think it's oxygen and water because they are the substance for cellular respiration.
