APES Final

Question 1

5 steps of nitrogen cycle

Answer 1

fixation: N2 is turned into ammonia (NH4+)
nitrification: Ammonia is turned into nitrites by nitrifying bacteria (NO3-)
Assimilation: Nitrifying bacteria in incorporated into these plants
Ammonification: Ammonia turns nitrates as plants die into ammonia
denitrification: Ammonia back into N2 by bacteria

Question 1

Name the five greenhouse gases we studied and their sources

Answer 1

Methane(CH4) anaerobic activity/agriculture, Chlorofluorocarbons (CFCs) synthetics,
Carbon Dioxide (CO2) combustion,
Nitrous oxide (N2O) from synthetic fertilizer and
H2O, water

Question 2

Name the aspects of the carbon cycle

Answer 2

Combustion, respiration, flux (in ocean) photosynthesis

Question 3

Steps of water cycle/other phenomenon

Answer 3

Evaporation/transpiration (evaporation off plants)/sublimation (evaporation directly from ice),
condensation,
precipitation,
runoff,
infiltration/percolation (water through surface/water through soil)

Question 4

phosphorus cycle

Answer 4

Comes from sedimentary rock eroding, can be combined with soil in the area and runoff into bodies of water through the water cycle

Question 5

Malthusian theory

Answer 5

Human population grows more rapidly then food supply until they suffer due to famines/war. Human population grows exponentially

Question 6

anthropogenic

Answer 6

environmental change caused by people

Question 7

biosphere

Answer 7

All parts of earth life can be found

Question 8

albedo

Answer 8

solar energy reflected back into space

Question 9

positive feedback loop

Answer 9

product of reaction leads to increase of reaction

Question 10

negative feedback loop

Answer 10

effects of reaction slow or stop reaction

Question 11

High Ph, Lower Ph

Answer 11

Higher Ph means more basic, lower Ph means more acidic