When a pollutant is removed from the air by a natural process, it . disrupts natural processes is gone forever causes chemical reactions ends up somewhere else

check for the pregnancy rating of drug. if its class c or d see if other alternatives

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