What two things interact to affect development of color in some instances?

answer i will give brainliest

If you are talking about biology, this is one example:

Explanation:

Both the siamese cat and the Himalayan rabbit illustrate how heredity interacts wit the environment.  In both cases, temperature of the environment affects the genes of color

im pretty sure the answer is b, i hope i < 3

although world war i began in 1914, the united states did not join the war until 1917. the additional firepower, resources, and soldiers of the u.s. to tip the balance of the war in favor of the allies. remaining neutral. when war broke out in 1914, the united states had a policy of neutrality.