Atmosphere - Biogeochemical Cycles

Question 1

Which of the following organisms CANNOT fix nitrogen into ammonia?

Accepted Answer

plants

Question 2

Atmospheric nitrogen can be directly used by most living organisms.

Accepted Answer

False

Question 3

The phosphorus cycle is unique in that the element does not cycle through the ________________.

Accepted Answer

atmosphere

Question 4

Excessive use of nitrogen and phosphorous fertilizers have led to excessive algal growth, which results in ____________.

Accepted Answer

eutrophication

Question 5

The more greenhouse gases in the atmosphere, the more the temperature increases. This leads to __________________.

Accepted Answer

climate change, global warming

Question 6

Human activity only releases carbon into the atmosphere in the form of carbon dioxide.

Accepted Answer

False

Question 7

Which of the following is NOT one of the processes that occurs during the nitrogen cycle?

Accepted Answer

nitrogenation

Question 8

Which of the following two processes drive the carbon cycle?

Accepted Answer

photosynthesis, respiration

Question 9

CO2, H2O, CH4, and O3 trap solar radiation in the atmosphere, warming the surface of the Earth in the greenhouse effect.

Accepted Answer

True

Question 10

____________________ are elements required by organisms in relatively large amounts.

Accepted Answer

macronutrients

Question 11

_____________________ are elements required by organisms in extremely small amounts.

Accepted Answer

trace elements

Question 12

In what form do plants absorb nitrogen?

Accepted Answer

nitrate (NO3-)

Questions 12