What are cavities left in rocks when shells or bones dissolve?

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

Brainliest ! is slowing down a car an example of acceleration? explain. - explain correctly

This rapid change in species that rarely leaves behind fossil evidence is referred to as