Population
Elements and Percentages
Cycles
Acts and Policies
Pollution
100
Brazil and Indonesia
Which two region contain the greatest area of rainforest?
100
Oxygen
What is the most abundant element in Earth's crust?
100
Transpiration
What is the process in the hydrologic cycle in which water vapor is released from leaves into the atmosphere?
200
24.5
What is the population doubling time in years for a country with an annual growth rate of 3.5 percent?
200
21%
Which of the following shows the concentration of oxygen in dry air? 21%, 56%, 20%, 13%
200
True
Carbon sinks include forests and oceans. True or False?
200
The Clean Water Act
What mandates the restoration and maintenance of the chemical, physical, and biological integrity of the nations waters?
200
True
Sudden or persistant noise may lead to permanent hearing loss. True or False?
300
Iron
What is the most abundant element in the Earth's core?
300
Safe Drinking Water Act
What requires minimium safety standards for community water supplies?
300
Methane
What is the greenhouse gas that is produced by domestic livestock?
400
Nitrification
Ammonium ions are converted to nitrate and nitrite ions through which process?
400
Toxic Substances Control Act
What establishes cradle-to-grave tracking of hazardous waste?
500
Aluminum
What is the element comercially extracted from bauxite?
500
Photosynthesis
Carbon dioxide is a reactant in what cycle?
500
aeration of water, phtyoremediation, and genetically engineered bacteria, etc.
What are three common methods employed in the cleanup of oil spills?
M
e
n
u