Which statement would BEST support an argument that sexual reproduction provides an advantage over asexual reproduction in a changing environment? A) Sexual reproduction produces fewer offspring.
B) Sexual reproduction takes less energy and time.
C) Sexual reproduction provides greater variation.
D) Sexual reproduction produces genetically identical offspring

C.

Explanation:

In a changing environment, organisms that reproduce sexually are more likely to live, because they have variation and different genetics which give them different skills, appearances, etc.

a tetrad is the foursome during meiosis made by two homologous chromosomes that have each already replicated into a pair of sister chromatids.

answer: 21

step-by-step explanation:

divide 630 by 30. 30 goes into 630 21 times