In all ecosystems energy is eventually lost to the environment via ________
A) trophic levels
B) photosynthesis
C) heat resulting from respiration
D) matter
E) radiation and reflection of light
C
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The 90 degree angle solar rays are striking the Tropic of Cancer on ________
June 21 March 21 September 21 December 21
Data detailing deaths from smoking, obesity, and alcohol use are examples of environmental hazards related to
A) biology. B) culture. C) the physical environment. D) chemicals in the environment.
A pumped-storage system is where water is pumped up into an elevated reservoir, and then allowed to fall to produce electricity. What is the basic reason this system is economical?
A. the electricity is being generated with a renewable energy resource. B. it is more efficient to generate electricity when it is generated with gravity. C. more electricity is generated than is used in pumping water into the reservoir. D. surplus electricity at night is being used to pump water into reservoir. E. the electricity is being generated with a non-carbon based energy source.
Tornadic thunderstorms that form ahead of an advancing cold front most often travel from ____
A) north to south B) northwest to southwest C) southwest to northeast D) southeast to northwest