1. An algal bloom resulting from excess detergent and fertilizer use in the surrounding community is most likely a result of which of the following? (3 points)

1 Carbonates
11 Nitrates
111 Phosphates
I only
II and III only
I, II, and III
I and II only
2.
(01.03 LC)

A key component in the nitrogen cycle is the process of (3 points)
nitrification
sublimation
evaporation
transpiration
3.
(01.03 LC)

Which is the best example of the organismic phase of the carbon cycle? (3 points)
Oceans hold stores of carbon dioxide.
Lightning strikes a telephone pole.
A cheetah exhales carbon dioxide.
Limestone contains carbon compounds.
4.
(01.03 MC)

What is a key difference between the phosphorus cycle and the carbon and nitrogen cycles? (3 points)
Plants absorb phosphorus from the soil.
Phosphorus is present in both living and non-living things.
Weathering and erosion release phosphorus.
Significant amounts of phosphorus are not found in the atmosphere.
5.
(01.03 MC)

Which of the following biogeochemical cycles uses the reaction 2N2 + 6H2O --> 4NH3 + 3O2? (3 points)
The phosphorus cycle
The carbon cycle
The water cycle
The nitrogen cycle
6.
(01.03 LC)

Which of the following reservoirs serves as a primary sink in the hydrologic cycle? (3 points)
The oceans
Rocks and sediments
The atmosphere
Ice caps and groundwater
7.
(01.03 MC)

2N2 + 6H2O → 4NH3 + 3O2 is a key reaction in the (3 points)
nitrogen cycle
carbon cycle
phosphorus cycle
hydrologic cycle
8.
(01.03 MC)

How do human beings negatively affect the carbon cycle? (3 points)
Human beings conserve resources, which decrease resources for the carbon cycle.
Human beings burn fossil fuels, which contribute carbon dioxide to the atmosphere.
Human beings use carbon-based pencils, which decreases the amount of carbon dioxide in the atmosphere.
Human beings mine resources, which increases the amount of oxygen available to the carbon cycle.