What do scientists call regions of earth that contain an unusually large number of species that are threatened by habitat loss?

Modern whales developed their traits through natural selection what occurs during the process of natural selection

One of the purposes of transcription is to produce a sequence of bases that

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. chinchilla x chinchilla 1/2 agouti, 1/2 chinchilla 3/4 agouti, 1/4 chinchilla all chinchilla