A relationship in which one species is helped and the other is NOT harmed.
A. Mutualism

B. Parasitism

C. Commensalism

D. Predation

c

Explanation:

a = both benefit

b one benefit and one harm

c = one benefit and one isnt affected

C. commensalism

Explanation:  Commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm while mutualism is symbiosis that is beneficial to both organisms involved and parasitism is  symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.

they are known to reach a speed of 21 miles per hour

i'm gonna put a couple so you can chose from

explanation:

if you know the fur color of the offspring mice, you can use the ratios to identify the genotypes of the parents.

if either parent mouse passes a dominant allele, the offspring will have black fur.

if the parental mice has two different fur color (i.e white and black) , the color of the offspring's fur would be either black, white, or the combination of both (grey)

hope this : )