Certain foraminifera (shelled protozoa) have inconsistent fossil records. which mode of evolution do they represent? a. adaptive radiation b. phyletic gradualism c. puncated equilibrium

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

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.

What’s the student’s scientific question