Paleontology....Would be your answer...
Answer:
b. Low levels of secretions of the hormones produces by the adrenal cortex
Explanation: is correct
Answer:
Pollen grains develop in the stigma.
Explanation:
In botany, the part of the gynecium that receives pollen during pollination is called stigma.
They are regions on the outer side of the surface of the carpels (the female leaves of the flower), separated from the ovary by style. Its surface is generally papillose, where each papilla is a cell, and moist, two features that facilitate the adherence of pollen. Once in the stigma, the pollen germinates, opening and growing from it a pollen tube through which the nucleus or nuclei that carry out the fertilization of the female gametes move. The tube must penetrate through the stigma and style tissue.
The answer would be B) because the skin acts as a barrier to prevent pathogens from entering.
The concept of survival of the fittest is natural selection. Not exactly sure what you mean by concept so I'm sorry if this is wrong.
