Why does too much carbon in the atmosphere cause a problem? ?

Anybody who knows ap biology, can you friend or message me

Why do german shepherds shed so much

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.