Which is a reason for the rise of nitrate levels in ground water?

A) overuse of fertilizers

B) ammonification by animals

C) soil erosion at grasslands

D) nitrogen fixation by Azotobacter

Which is an environmental hazard most directly created by humans?

Which kind of molecule is used by organisms to store and transmit genetic material? nucleic acid carbohydrate protein lipid

niridia is a type of blindness due to a single dominant gene. Migraine headache is the result of a different dominant gene.

Suppose you were standing on a scale in an elevator in a free fall. what would the scale read?

A school nurse is called to assess a 12-year-old child with type 1 diabetes mellitus who is experiencing lightheadedness, tachycardia, pallor, headache, and confusion during gym class. what is the priority action by the nurse?

If you were in a boat as Hurricane Sandy passed overhead on October 28 at 4am, at what altitude would Polaris appear in the sky from your location (32°N and 73°W) ?

Which instrument would provide the most detailed information about the internal structure of a chloroplast

Staind yeast were added to a paramecium culture, and some of the yeast were ingested by the paramecia. this activity is most closely associated with which life function A) synthesis B) regulation C) nutrition D) growth

Which statement is true? Sediment can be any size. Sediment is only small particles of sand that settle out of the water. Sediment doesn't move from the place where it was formed. Sediment in the wind is too small to cause damage.

The small outpouchings that protrude from the intestinal lumen are called