In a food chain involving agricultural land, where is the most total energy available?
A) At the second trophic level
B) At the top trophic level
C) At the bottom trophic level
D) All levels have the same total energy available.
C
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What element is behaves as the oxidizing agent in the following equation and what element behaves as the reducing agent? Sn2+ + 2 Ag ? Sn + 2 Ag?
A. The tin ion, Sn2+, is the oxidizing agent, while silver, Ag, is the reducing agent. B. The tin, Sn, is the reducing agent, while silver ion, Ag?, is the oxidizing agent. C. The tin ion, Sn2+, is the reducing agent, while silver, Ag, is the oxidizing agent. D. The tin, Sn, is the oxidizing agent, while silver ion, Ag?, is the reducing agent.
Wind is an example of:
A) conduction. B) advection. C) radiation.
Why do pegmatite mineral crystals grow so large? What will be an ideal response?
Thunderstorms
A) contain cumulonimbus clouds. B) can penetrate the stratosphere. C) contain rapidly rising saturated air. D) all of the above E) none of the above