Two subspecies of tufted-ear squirrels have been observed near the Grand Canyon. Scientists believe that these two squirrels evolved from a common population of squirrels that lived in the ponderosa pine forests that once
grew in what is now the Grand Canyon. The Kaibab squirrel is found on the north side of the canyon, and the
Abert's squirrel is found on the south side.

c

explanation:

idk

there are mainly three domains in biological classification namely; archaea, bacteria, and eukarya.

archaea includes all the prokaryotic cells which are characterized by their lipid membranes. they have branched hydrocarbon which is attached to glycerol through an ether linkage.

bacteria includes all the prokaryotic cells, the cell membrane of which are made up of the unbranched fatty acid chain. in addition, they are attached to glycerol through an ester bond.

eukarya includes all the eukaryotic cells, that is, the cells contain a nucleus and other membrane-bound cell organelles.

they can be autotrophic as well as heterotrophic, unicellular as well as multicellular

they include kingdoms like protista, plantae, animalia, fungi et cetera.

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explanation:

most community's take hundreds of years to become stable

a. to encourage apoptosis