A single volcano may produce
A. only nonexplosive eruptions.
B. only explosive eruptions.
C. both explosive and nonexplosive eruptions.
D. either explosive or nonexplosive eruptions, but never both.
Answer: C
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What environmental worldview proposes that we are part of and dependent on nature and that the earth's life-support systems exists for all species, and not merely for us?
A. planetary management B. stewardship C. environmental wisdom D. national origin E. technological
It is believed the most prominent means by which humans add CO2 to the atmosphere is by ________.
A) the burning of coal and other fossil fuels B) renewable energy C) nuclear electric power D) solar power
Nucleic acids
A) act as hormones that allow cells to communicate with one another. B) consist of folded strings of amino acids. C) store energy in living organisms. D) store genetic information in living organisms.
Which of the following is the most universal signaling agent?
A) Ca2+ B) Na+ C) K+ D) Cl-