What do the terms oligotrophic, mesotrophic, and eutrophic refer to?
a. nutrient levels in lakes
b. severity of catastrophic events in nature
c. depth of groundwater resources
d. types of consumptive water use
e. classes of groundwater based on origin
A
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Which of these actions can we take to reduce desertification?
A. increase irrigation B. increase grazing C. manipulate weather to control drought D. decrease number of trees in desertified areas E. decrease human contribution to climate change
A fellow classmate hands you a rock that they claim is a meteorite. What characteristics would you look for in order to confirm that the rock really is a meteorite?
A. Attracts a magnet B. Heavy C. A dark, smooth surface D. All are correct E. None of the choices are correct
Matching
a. functional diversity c. ecological diversity b. genetic diversity d. species diversity 1. Caribbean snails of the same population exhibit a variety of shell colors and banding patterns. 2. Coastal states in the United States typically have more ecosystems than land-locked states. 3. Some tropical forests contain thousands of producer species. 4. Nutrients typically cycle much faster in tropical areas than in polar areas. 5. Estuaries and wetlands have very high primary productivity. 6. Coral reefs are known for their very high number of species. 7. Areas with both mountain ranges and coastal ecosystems have high diversity. 8. An early fox population evolved into the grey fox and arctic fox.
All of the following are oil rich countries except
A. Yemen B. Saudi Arabia C. Iraq D. United Arab Emirates