Why did the United States ban the use of DDT? It began mutating. It became too costly to continue its use. Its risks outweighed the benefits. It was no longer effective.

How does extinction affect evolution? It speeds up the evolution of other species. It slows down the evolution of other species. It completely stops the evolution of a species. It has no effect on evolution.

A client's blood glucose level is 45 mg/dl. the nurse should be alert for which signs and symptoms?

Which polysaccharide has the main function of being a structural component of bacterial cell walls?

Witch animal group spiders belong to

Which statement best describes a human influence on the biogeochemical cycles?

Why does it matter from which organ or tissue type the cancer developed

The nerve cells in the human nervous system seldom undergo mitosis. Based on this information, explain why complete recovery from injuries to the nervous system usually doesn't occur.

A protein was purified to homo - geneity. Determination of the mass by gel-filtration chro - matography yields 60 kDa. Chromatography in the pres - ence of 6 M urea yields a 30-kDa species.

Which of the following tools should a scientist use to measure an object in meters? Electronic balance Pan balance Tape measure Thermometer

What causes nematocysts to discharge?