Questions from Conceptual Biology

Q: To assess the impact of human activity on the carbon dioxide level

To assess the impact of human activity on the carbon dioxide level in Earth’s atmosphere, it helps to take a long view. One useful data set comes from deep core samples of Antarctic...

Q: Organisms at the lowest trophic level in a tallgrass prairie are all

Organisms at the lowest trophic level in a tallgrass prairie are all _________. a. two steps away from the original energy input b. autotrophs c. heterotrophs d. both a and b e. both a and c

Q: Sulfur dioxide released by coal-burning power plants contributes to _________.

Sulfur dioxide released by coal-burning power plants contributes to _________. a. ozone destruction b. sea level rise c. acid rain d. desertification

Q: To assess the impact of human activity on the carbon dioxide level

To assess the impact of human activity on the carbon dioxide level in Earth’s atmosphere, it helps to take a long view. One useful data set comes from deep core samples of Antarctic...

Q: All organisms at the top trophic level _________. a. capture

All organisms at the top trophic level _________. a. capture energy from a nonliving source b. obtain carbon from a nonliving source c. would be at the top of an energy pyramid d. all of the above

Q: Primary productivity is affected by ________. a. nutrient availability

Primary productivity is affected by ________. a. nutrient availability b. amount of sunlight c. temperature d. all of the above

Q: Efficiency of energy transfers in aquatic ecosystems is typically higher than in

Efficiency of energy transfers in aquatic ecosystems is typically higher than in land ecosystems because __________. a. aquatic food webs include more endotherms b. algae do not make lignin c. primary...

Q: Most of Earth’s fresh water is _________. a. in lakes

Most of Earth’s fresh water is _________. a. in lakes and streams b. in aquifers and soil c. frozen as ice d. in bodies of organisms

Q: Earth’s largest carbon reservoir is ________. a. the atmosphere

Earth’s largest carbon reservoir is ________. a. the atmosphere b. sediments and rocks c. seawater d. living organisms

Q: Greenhouse gases ________. a. slow the escape of heat energy

Greenhouse gases ________. a. slow the escape of heat energy from Earth into space b. are produced by natural and human activities c. are at higher levels than they were 100 years ago d. all of the ab...