In a single second, the Earth receives as much energy from the Sun as ________
A) it re-radiates in a week
B) humans could use in a century
C) humans have used since the beginning of civilization
D) all power plants generate in a week
E) Earth has produced through volcanic eruptions since the beginning of Earth's history
Answer: D
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Earth satellites in an elliptical orbit have greatest speeds when
A. farthest from the Earth. B. nearest the Earth. C. neither of these D. can't say
For the Afghan people, which of the following would be the most useful benefit from mining profits?
A. training for Afghan mining technicians and establishment of Afghan mining institutes B. use of the U.S. military to provide security at mines C. creation of improved roads into and around mining sites for corporate transport and mining machinery D. establishment of high-end tourist hotels for visiting foreign mine executives and their families E. permanent enclaves of foreign scientists and mine managers located near mining sites
________ terrestrial biome has the most biodiversity
A) Tropical rainforest B) Boreal forest C) Temperate rainforest D) Temperate deciduous forest E) Prairie
Which of the following best matches the description?An organism that can manufacture food from inorganic compounds and light energy.
A. biomass B. carbon cycle C. denitrifying bacteria D. trophic level E. omnivore F. habitat G. secondary consumer H. ectoparasite I. nitrogen cycle J. interspecific competition K. limiting factor L. producer M. intraspecific competition N. nitrogen-fixing bacteria O. community P. herbivore