A community that changes very little over time is said to have great

A. Connectedness
B. Diversity
C. Complexity
D. Renewal ability
E. Constancy


Answer: E

Environmental & Atmospheric Sciences

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When organisms die, their nitrogenous organic compounds are converted to simpler inorganic compounds such as ammonia through the process of

a. Nitrification b. Ammonification c. Denitrification d. Assimilation e. Leaching

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You are hiking on a mountain trail at sunrise when you smell the smoke from cooking bacon. You can't see where the smoke is coming from. Would the camp likely be above you or below you on the mountain? Explain.

What will be an ideal response?

Environmental & Atmospheric Sciences

Lichens play a special role in chemical weathering by

A) weakening the hydrogen bond in water, making it more effective at dissolving rocks with high quartz concentrations. B) slowing the rate of jointing in rocks. C) acting as a catalyst for the dissolution of minerals that crystallize at the highest temperatures. D) secreting oxalic acid, which dissolves carbonates particularly well.

Environmental & Atmospheric Sciences

This figure shows the main subdivisions of the geologic timescale. Which of these is the Precambrian?

A. A B. B C. C D. D

Environmental & Atmospheric Sciences