I believe the correct answer would be D. Hope this helps!
Guanine, Cytosine, Adenine and Thymine
Answer:
D fleas affect all animals
Explanation:
who many chambers does the heart has
Answer:
Divergence
Explanation:
This happens because of the different genetic makeup or genotype of different individuals. The divergence mechanism occurs because of divergent evolution where in some cases random chances occurs and neurons became a source of stimulus for one but not other and vice versa.
