What in your home would be considered something you could study in biology?

answer; the correct answer is desert plants;

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.