19) A forest has a GPP of 3.8 kg C/m2/year and the rate of cellular respiration is 2.4 kg C/m2/year. What is the NPP?
A) 6.2 kg C/m2/year
B) 1.4 kg C/m2/year
C) 1.0 kg C/m2/year
D) 9.12 kg C/m2/year
E) 1.58 kg C/m2/year
20) The number of species in a given area such as a pond, the canopy of a tree, or a plot of grassland, is known as _______________.
A) species evenness
B) microevolution
C) ecosystem diversity
D) macroevolution
E) species richness
21) Most demographers estimate that the human population will stabilize between ____ and ____ billion people by 2100.
A) 7.1; 8.3
B) 6.8; 10.5
C) 7.1; 12.7
D) 6.8; 8.3
E) 12.2; 13.3
22) Which developed country has the fastest population growth rate today?
A) France
B) Denmark
C) United States
D) China …show more content…
Which of the following would be considered sustainable use of rare earths?
A) Closing the rare earth mines to prevent over-mining
B) Careful control over which countries are allowed to buy rare earths
C) Careful recycling of rare earth metals in electronics
D) Mining rare earths from asteroids
E) Mining rare earths from the ocean floor
36) The addition of a limiting nutrient to a body of water may lead to an algal bloom. What effect will this algal bloom have on the oxygen content of the water?
A) The algal bloom will cause the oxygen content in the water to increase overall
B) The algal bloom will have no impact on the oxygen content of the water
C) The algal bloom will cause first a decrease, then a sharp increase in
A) 6.2 kg C/m2/year
B) 1.4 kg C/m2/year
C) 1.0 kg C/m2/year
D) 9.12 kg C/m2/year
E) 1.58 kg C/m2/year
20) The number of species in a given area such as a pond, the canopy of a tree, or a plot of grassland, is known as _______________.
A) species evenness
B) microevolution
C) ecosystem diversity
D) macroevolution
E) species richness
21) Most demographers estimate that the human population will stabilize between ____ and ____ billion people by 2100.
A) 7.1; 8.3
B) 6.8; 10.5
C) 7.1; 12.7
D) 6.8; 8.3
E) 12.2; 13.3
22) Which developed country has the fastest population growth rate today?
A) France
B) Denmark
C) United States
D) China …show more content…
Which of the following would be considered sustainable use of rare earths?
A) Closing the rare earth mines to prevent over-mining
B) Careful control over which countries are allowed to buy rare earths
C) Careful recycling of rare earth metals in electronics
D) Mining rare earths from asteroids
E) Mining rare earths from the ocean floor
36) The addition of a limiting nutrient to a body of water may lead to an algal bloom. What effect will this algal bloom have on the oxygen content of the water?
A) The algal bloom will cause the oxygen content in the water to increase overall
B) The algal bloom will have no impact on the oxygen content of the water
C) The algal bloom will cause first a decrease, then a sharp increase in