Global warming due to the greenhouse effect may be
A) moderated by photosynthesis, which removes carbon dioxide from the atmosphere.
B) made worse by photosynthesis, which adds carbon dioxide to the atmosphere.
C) reduced by the burning of fossil fuels, which removes oxygen from the atmosphere.
D) of little concern, since it is part of the normal cycle for the planet.
Answer: A
You might also like to view...
An organism that is heterozygous for two traits can produce a maximum of _______ different gametes for these traits.
A. 2 B. 4 C. 2; if they are on the same chromosome D. 4; only if they are on different chromosomes E. 8
The habitat of a species has
a. both abiotic and biotic factors. b. neither biotic or abiotic factors. c. biotic factors. d. abiotic factors.
In the human mouth, ____ begins the process of chemical digestion
a. amylase b. pepsin c. bile d. secretin e. chime
In comparison to rocky coasts, intertidal organisms living on sandy or muddy beaches
A) experience greater variability in salinity. B) experience greater variability in temperature. C) are more likely to be attached to the substrate. D) are more likely to move back and forth with the tides.