The primary effect of thermal pollution on aquatic ecosystems is ________
A) lowering the pH of the water
B) causing a large increase in plant productivity
C) depleting dissolved oxygen
D) increased evaporation
E) lowering the water table
C
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According to some Roman historians, such as Sallust, which moment in Republican history marked the beginning of the end of the Roman Republic?
A) The birth of Julius Caesar B) Victory over Carthage in the Third Punic War C) Victory over Carthage in the Third Punic War D) The reforms of Tiberius Gracchus
Which of the following best matches the description?Molecule consisting of three atoms of oxygen.
A. particulates B. acid deposition C. thermal inversion D. primary air pollutants E. oxides of nitrogen F. ozone G. sulfur dioxide H. secondary air pollutants I. greenhouse effect J. radon K. photochemical smog
In terms of expanding our knowledge of how soils impact global climate change, it would be useful to do research to determine
A) the amount of carbon in soils compared to the atmosphere. B) whether conventional agriculture could be continued in areas covered by salt water. C) the factors that determine the rate of biomass decomposition and carbon storage in soils. D) how pesticides affect the amount of minerals in subsoils.
The Saffir-Simpson scale
A) uses storm surge as the best predictor of storm damage. B) is no longer used by most meteorologists. C) shows that most hurricanes are Category 5. D) is based primarily on wind speed. E) is also used to categorize tornadoes.