Ocean currents move warm and cold water around the earth, affecting earth's

In dna, only the_ varies from one nucleotide to another. base phosphate sugar amino acid

As a small change in a person's dna can cause a genetic disorder

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c.ozone layer hole d.increase in sea levels