Answer:
The correct answer is option c. "The gametes must be kept wet to avoid desiccation".
Explanation:
External fertilization is an adaption were species reproduce sexually, but there is no direct contact between the female and the male species, because the egg is fertilized outside the female's body. This adaptation occurs more often in aquatic animals because the gametes must be kept wet to avoid desiccation and allow fertilization, which occurs much more easily on aquatic environments.
Answer:
Stabilizing selection.
Explanation:
Stabilizing selection may be defined as a type of the natural selection the mean population is stabilizes on the particular non extreme trait of a population.
The people with heterozygous condition for sickle cell trait are selected against the malaria condition. These organisms survive whereas the homozygous dominant for the normal trait and homozygous recessive dies due to malaria. Here, the heterozygous genotype individual are selected and shows the type of stabilizing natural selection.
Answer:
No
Explanation:
Frogs absorb water through their skins, not consume it directly.