Using the drop-down menus, identify the structures common to all cells. Label A Label B Label C Label D A cell is labeled. The outside layer is labeled B. The inside is labeled D. Small dots are labeled C. A swirly structure is labeled A.

•there must be variation for the particular trait within a population.

•the variation must be inheritable (that is, it must be capable of being passed on from the parents to their offspring).

•individuals with one version of the trait must produce more offspring than those with a different version of the trait.good

explanation:

thinking it would be d not too sure but i think it's right

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"