Respiration:
A) occurs only when the Sun is shining.
B) releases oxygen into the air.
C) must give off less carbon than is fixed through photosynthesis if a plant is to experience net growth.
D) does not affect the concentration of carbon dioxide in the atmosphere.
Answer: C
You might also like to view...
An earthquake measures 5.0 on the Richter scale. Therefore,
A. 10 times as much damage is done to buildings as there is in a magnitude 4.0 earthquake. B. the earthquake is 10 times deeper compared to a 6.0 earthquake. C. the ground shakes 10 times as much as it does during a magnitude 4.0 earthquake. D. 10 times as much energy is released as during a magnitude 4.0 earthquake.
Ocean sediments consist of particles that have slowly settled out of the water by which of the following the processes?
A) Grain lithification B) Paleooceanography C) Porosity reduction D) Sediment compaction E) Suspension settling
Monoculture farming ________
A) accounts for less than 1% of U.S. croplands B) is always accompanied by no-till agriculture C) requires no chemical fertilizers or pesticides D) is a development of industrial agriculture E) is typical of Native American farming techniques
The single largest source of many forms of atmospheric pollutants, including carbon monoxide, is
A. electricity-generating plants. B. waste disposal by incineration. C. transportation. D. industrial and manufacturing activities.