Carbon dioxide is removed from the atmosphere through the process of ____
A) fuel combustion
B) respiration
C) volcanic activity
D) photosynthesis
D
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What extraction process involves setting off explosive charges to create cracks deep in rock and then pumping a mixture of water, sand, and chemicals into the cracks?
A. liquid extraction B. solar conversion C. vertical drilling D. hydraulic fracturing E. horizontal drilling
Weathering is most intense in the
A. A-horizon. B. B-horizon. C. C-horizon. D. parent material beneath a soil.
The sudden increase in oil and gas production by fracking in the United States was enabled by two technologies: hydraulic fracturing and ____.
A. liquefied natural gas ships B. cargo helicopters C. digital water pumps D. GPS E. horizontal drilling
Which of the following best matches the description?Competition between members of different species.
A. interspecific competition B. producer C. omnivore D. carbon cycle E. herbivore F. ectoparasite G. intraspecific competition H. nitrogen cycle I. denitrifying bacteria J. secondary consumer K. habitat L. nitrogen-fixing bacteria M. trophic level N. limiting factor O. biomass P. community