Ocean covers approximately ________ percent of Earth's surface.
A) 91
B) 51
C) 11
D) 71
Answer: D) 71
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Some birds consume certain soils in what is called geophagy. In some cases, the soils help the birds digest toxins that occur in their diets. These birds eating soil represent a member of the
A) biosphere consuming a component of the lithosphere. B) hydrosphere consuming a component of the atmosphere. C) lithosphere consuming a component of the biosphere. D) atmosphere consuming a component of the hydrosphere.
This conveyor belt contributes to the formation of the most precipitation of a cyclone
A) cold conveyor belt. B) dry conveyor belt. C) warm conveyor belt. D) stratospheric conveyor belt. E) none of the above
Which of the following best matches the description?Bacteria that convert atmospheric nitrogen gas into forms of nitrogen that plants can use.
A. nitrogen-fixing bacteria B. limiting factor C. producer D. omnivore E. nitrogen cycle F. carbon cycle G. ectoparasite H. biomass I. intraspecific competition J. denitrifying bacteria K. habitat L. trophic level M. interspecific competition N. secondary consumer O. community P. herbivore
The main dune form in most deserts is called a(n) ________
A) barchan B) bajada C) self D) transverse E) alluvial