Which ion has the shortest residence time in the oceans?
A. Chloride
B. Sodium
C. Sulfate
D. Iron
E. Potassium
Answer: D
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Figure 3.15 Generalized pyramid of energy flow showing the decrease in usable chemical energy available at each succeeding trophic level in a food chain or food web.
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Use the accompanying figure to answer the following five questions.
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Why is heat shown as being lost to the environment?
What will be an ideal response?
Which factor is more likely to increase the likelihood of a couple having a child?
A. need for child to be part of the labor force B. religious beliefs C. cost of child's education D. lack of a pension system E. employment opportunities for women
In percolating rainwater, dissolved gases and the decay products of local vegetation increases the water's capacity to ________
A) evaporate B) condense C) drive chemical reactions D) freeze E) undergo mechanical weathering
Substance(s) that qualify to be called particulate air pollutants include
A. carbon dioxide. B. ozone. C. nitrogen oxides. D. smoke.