CAM plants
A) use energy sources at hydrothermal vents rather than sunlight to make food.
B) sometimes conduct C4 photosynthesis and conduct C3 photosynthesis at other times.
C) are those that are consumed by omnivores but not herbivores.
D) are those that are consumed by herbivores but not omnivores.
B) sometimes conduct C4 photosynthesis and conduct C3 photosynthesis at other times.
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If a country's ecological footprint is larger than its biological capacity to replenish its renewable resources and absorb the resulting waste and pollution:
a. It is said to have an ecological deficit. b. It should be supported by other countries with smaller footprints. c. It is said to be a sustainable society. d. It is most likely a developing country. e. More than one of these answers is correct.
Current levels of atmospheric carbon dioxide are
A) remaining high but steady. B) nearly 400 ppm, higher than they have been in 800,000 years. C) fluctuating greatly but are starting to increase again after a downward trend in the 1990s. D) decreasing because surplus carbon dioxide is being absorbed by the arctic permafrost.
There is little threat of a tsunami striking the East Coast of the United States.
Answer the following statement true (T) or false (F)
For most solids, sufficiently increased stress results in
A. rupture. B. deformation. C. shearing. D. transformation.