Test 3 part 2

Question 1

the nitrogen cycle goes in what order?

Answer 1

Fixation/Ammonification, nitrification, denitrification/assimilation

Question 2

what are things that organsims need nitrogen for?

Answer 2

DNA, RNA, and aminoacids

Question 3

what is the most common form in which nitrogen gets released back into the environment.

Answer 3

ammonia

Question 4

the phosphorus cycle is what?

Answer 4

the phosphate is released from rocks due to weathering, the phosphate is fixed by primary producers and then decomposers release these back into the soil when those primary producers die

Question 5

what is phosphorus used for that Nitrogen is not?

Answer 5

ATP

Question 6

what are dead zones?

Answer 6

a region in the ocean with so little oxygen that almost no life exists.

Question 7

what is eutrophication?

Answer 7

where there are so many nutrients that the bacteria takes over the ecosystem and drains it’s oxygen

Question 8

there are four mechanisms of evolution, what are they?

Answer 8

natural selection, muatation, gene flow, and genetic drift

Question 9

Georges buffon suggested what?

Answer 9

the earth should be older than previously thought

Question 10

the struggle for existance is based on what?

Answer 10

the struggle of survival and the struggle to reproduce