According to current NAAQS standards, particulates
A) less than 2.5 micrometers in diameter have the greatest impact on human health.
B) greater than 10 micrometers in diameter have the greatest impact on human health.
C) should not be regulated by the EPA based on size.
D) released into the air drop out within 15 minutes and thus are quite safe.
A
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What maintains the permanent thermocline found at all low and mid-latitudes?
A) Continual upwelling B) Warm water currents C) Density stratification D) None of these choices
Marine mammals are ____
A) ectothermic B) endothermic C) autotrophic D) disphotic
The classic scientific method includes
A. predicting the results of experiments. B. performing experiments. C. formulating general rules that organize findings. D. all of the above
A fault zone that is known for a lot of big and small earthquakes goes suddenly quiet for 10 years. This quiet period in an otherwise active fault zone is called a seismic gap. Explain why seismic gaps are pretty good indicators that an area may soon have a moderate or large earthquake. (Hint: Think of strain in rocks.)
What will be an ideal response?