Which of the following is least affected by convection heating?
A) a volcano erupting
B) Earth's mantle
C) wind
D) rain
Answer: D
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Which of the following components constitute(s) the greatest portion of the soil?
A) humus B) air C) rocks and rock particles D) dissolved substances
Porosity of rocks typically remains stable. In other words, it does not vary considerably over short distances.
a. true b. false
If an organism is described as 'benthic," where does it reside?
A. At the bottom of the ocean or a lake B. At the bottom of the ocean only C. In a cave D. At the bottom of a lake only
Some of the leading ecotourism destinations include:
A. Costa Rica and Panama in Central America B. Malaysia and the Galapagos Islands C. the Serengeti in Tanzania; the Amazon rain forests D. the Caribbean, New Zealand and all of the above