Answer:
The answer is spongy mesophyll.
Explanation:
Between the upper and lower epidermis of a leave, you can find the so called mesophyll tissue which is rich in chloroplasts. There are two types of mesophyll tissue: the palisade and the spongy mesophyll. Whereas the cells of the palisade mesophyll are tightly packed, the cells of the spongy mesophyll are loosely packed.
The answer for this question is "founding population arrives, biogeographic isolation occurs, genetic changes occur, reproductive isolation results" so it is letter A
D.
variable-ratio schedule of reinforcement.
Answer: dandelion is consumed by bees, grasshoppers, and butterflies.
