Select the best answer for the question. 5. the challenges characters have to overcome in fictional works is known as the a. theme. b. plot. c. conflict. d. setting.

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

Which of these is not a nucleotide base found in dna?

As a result of these processes the single celled organism accomplishes