A mutation A
is a person or an animal randomly selected from the population.

B
is a random change in a cell's DNA.

C
always occurs when the male's sperm joins the female's egg.

D
is produced by mating two different species.

I'm pretty sure it's D. bc a mutation is something that's created from mixing two different species

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )