Within any large animal population, there is

a variety of traits.

And between different animal populations, there is a variety of traits.

OA. never; always

OB. always; always

OC. sometimes; sometimes

OD. never, sometimes

Always and always

Explanation:

Within any large animal population there is always a variety of traits seen in the population. When there is a large number of individuals in a population then there are chances that there a genetic diversity.

Sexual reproduction in the organism can lead to the genetic variation in the organism. There are chances to have more variation in the population having more organism.

Two different organism are genetically different and there are variety of traits seen in the two animals that belongs to different species.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

a. the production of carbon dioxide through the process of photosynthesis