Answer: Protect against future economic crises
Explanation:
A) They trap the suns heat to warm up the earth, like a real greenhouse
male
Explanation:
Females ovary always have a X chromosome.
Males sperms are of two types, they either have X chromosome or Y chromosome.
If X chromosome of males is involved in fission then, it results in XX chromosome set, it results in a female child.
If Y chromosome of males is involved in fission then, it results in XY chromosome set, it results in a male child.
Plant roots usually grow downwards, sprawling out as they collect water in the soil.