1. The ozone layer in the atmosphere is able to block
- infrared radiation
- ultraviolet radiation
- gamma rays
- ultrared radiation
- infraviolet radiation
2. An increase in the concentration of carbon dioxide in the atmosphere is contributing to
- the greenhouse effect
- the ozone hole
- a decrease in global temperature
- an increase in animal extinction
- acid rain
3. In a typical ecosystem, which percentage of energy in a plant becomes available to an animal that eats the plant?
4. Energy and matter pass through different organisms in an ecosystem at different steps called
- populations
- communities
- species
- trophic levels
- ecologic niches
5. The importance of the ozone layer to Earth's inhabitants is
- protection from ultraviolet rays.
- to neutralize the NOx molecules in acid rain.
- to prevent acid rain.
- to mediate temperatures in the stratosphere.
- all of these are correct.
6. If the annual temperature of Washington DC warms two degrees Celsius, its climate would be most like
- Minnesota.
- California.
- Georgia.
- England.
- Missouri.
7. Which of the following is NOT considered to be a component of air pollution?
- sulfur dioxide
- nitrogen dioxide
- nitrogen monoxide
- carbon monoxide
- nitrogen
8. Which are products of burning fossil fuels in the atmosphere?
- carbon dioxide and water vapor
- nitrogen oxides and sulfur compounds
- water vapor and sulfur compounds
- carbon dioxide and hydrocarbons
- all of these are correct.
9. What are some ideas proposed to decrease the emissions that lead to global warming?
- limit the burning of fossil fuels
- strict auto emissions limits
- use scrubbers to clean up coal-burning
- drive more hybrid cars
- all of these are correct
10. Why do scientists think that global warming is occurring?
- 20 of the 25 warmest years in recorded history occurred since 1980
- sea level is rising
- glaciers are melting
- 1990s was the warmest decade on record
- all of these are correct
11. According to the equilibrium hypothesis, introducing a new species to an isolated ecosystem will
- cause another species to go extinct.
- cause a depletion of oxygen.
- make other species stronger by increasing competition.
- add to the diversity of the ecosystem
- have no impact on the ecosystem.
12. A food web consists of
- all of the herbivores in an ecosystem
- all of the carnivores in an ecosystem
- all of the predators in an ecosystem
- all of the prey in an ecosystem
- all of the organisms in an ecosystem
13. The greenhouse effect is due to the buildup of __________ in the atmosphere.
- ozone
- smog
- carbon dioxide
- oxygen
- nitrogen