It is D because the explanations shown shows impacts of how humans are effecting the environment
White blood cells move into and out of blood vessels by the process of chemotaxis
<span>in addition to resemble one another, the other criteria that are required for organisms to be group in the same species is : D. they reproduce with only one another
Dog and Wolf for example. They have very similar resemblance, but since they could create and offspring if theyre copulating, both of these animals are not in a same species</span>