When bacteria fix nitrogen gas to produce ammonia

If fission takes place every 20 minutes in some bacteria, then starting with one bacterial, how many bacterial cells would be produced in three cell divisions or one hour

Primary succession can occur after a A.) forest fire destroys many acres of forest B.) volcanic eruption produces a new island C.) field is paved over to make a parking lot D.) garden is planted with wildflower seeds

In the condition known as atherosclerosis, a deposit or atheroma forms on the arteral wall and reduces the openin through which blood can flow.

A body of cell that is undergoing abnomal cell division is mostly

Identify the cavity that develops entirely from mesoderm

The shape and size of a birds beak would mostly be affected by what environmental limiting factor

Why do you think scientists use the word mutate to describe the genetic process shown in the video

Which best describes the purpose of a controlled experiment? A. to make sure the results of the experiment support the hypothesis B. to prevent a dangerous condition resulting from a reaction C.

Bones, joints, ligaments, and cartilage are parts of the a) refrigerator b) muscles c) skeleton

Chloroplasts cannot move on their own. How do they move around the cell?