Answer:
A
As sand cannot hold the heat for long, it gets cooler as soon as the sun sets
Answer:
A class system is a more smooth system, caste is more of a system that changes consistently.
Explanation:
"Class system is typically more fluid than the caste system or the other types of stratification and the boundaries between classes are never clear-cut. Caste system is static whereas the class system is dynamic. ... In the caste system, individual mobility from one caste to another is impossible."
Angiosperms have ovaries; gymnosperms do not.
