10. When we breathe in the muscles below the rib cage is pulled down, and air gets suck into the rib cage, filling the lungs, what is this muscle called?
a. Diaphragm
b. Lung
c. Stomach
d. Trachea

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

Restriction enzymes are used in making recombinant dna. describe the role restriction enzymes perform when constructing recombinant dna.

Is this mrna or rna need need the answer in a hurry