if successful performance on a test requires knowledge that people of a particular culture do not generally have, the test is said to be .

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

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 phase of the cell cycle ensures that identical copies of the dna are made for daughter cells?