What type of unhealthful air population occurs when ozone near the ground mixes with other polluting gases?
acid
smog
fog
haze

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.

How does the nervous system affect the excretory system?

What makes a dominant allele different from a recessive allele