The first trophic level in a hydrothermal vent community is ________.
A. dependent on organic material drifting down from the surface
B. made up of clams and tube worms
C. seriously polluted
D. dependent on bacteria and their ability to use hydrogen sulfide
E. provided by larvae drifting in deep-sea currents
Answer: D
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Each step in the nuclear fuel cycle poses a radiation exposure problem.
Answer the following statement true (T) or false (F)
The first humans on Hawaii likely came from ________ in ________
A) New Zealand/B.C. 60 B) The Marquesas Islands/A.D. 400 C) Tahiti/A.D. 800 D) Polynesia/A.D. 1300
Geographers study people, places, and environments, but rarely collect data that can be mapped
Indicate whether the statement is true or false
Which of the following is not an agent of transport?
A. glacier B. alluvial fan C. gravity D. wind