The thermocline is the layer in a lake at which
A. Nutrient levels are the lowest
B. The warm upper zone meets the cold lower zone
C. Seasonal lake mixing occurs
D. Light no longer penetrates enough for photosynthesis to occur
E. Pollutants are trapped and held
Answer: B
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Geographic isolation may result from
a. a volcanic eruption b. an earthquake c. a mountain range d. all of these answers e. none of these answers
For the following acid-base reaction, identify what compound is formed in the space marked. HNO3 + KOH ? ? + H2O
A) KNO3 B) H3ONO3 C) KOH2 D) KOH2NO3 E) none of the above
Describe the relationship between precipitation and topography. Compare
the precipitation and topography of the eastern U.S. to the western U.S. What will be an ideal response?
Most heat absorbed by Earth will escape to space via the buildup of greenhouse gasses
a. True b. False Indicate whether the statement is true or false