An increase in the concentration of carbon dioxide in the

Question

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?

• 10%
• 20%
• 50%
• 90%
• 100%

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