Answer:
A the hole in the ozone layer is decreasing
B
Explanation:
Cuz they combine during fertilization and since 2 halves = 1 whole, u get gametes w a full number of chromosomes
Answer:
Option B, Mammals and reptiles in the post-dinosaur age.
Explanation:
Adaptive radiation is mechanism through which species evolve very fast from common single ancestors. In simple words two different species are said to have evolved through adaptive radiation when they have descended from a single lineage. This is not the case with mammals and reptiles.
Generally in adaptive radiation, a species evolve when it faces new environmental challenges due to change of habitat or area. For example mammals have evolved from dinosaurs.
Hence, option B is correct
The answer would be, if I understand correctly, skeletal and smooth muscle tissue both help the body move, and give the body form. The skeletal structure give the body structure, and the muscles help the body move.
Both have phosphate-pentose back bone, as well as both have adenine, cytosine and guanine bases.