Hurricanes are usually fueled by energy from ________
A) the jet stream
B) frontal boundaries
C) warm water
D) midlatitude cyclones
E) fast surface winds
Answer: C
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What is ozone?
A. O B. O2 C. O3 D. O4
The trophic level of "producers" includes ________
A) any organism producing biomass directly from photosynthesis B) any organism using oxygen for respiration C) heterotrophs only D) the sum of both living and dead biomass in an ecosystem E) heterotrophs and autotrophs
Based on the pattern of water table contours, what should be the general direction of groundwater flow in this area?
The question is based on Figure 25-4, showing lakes in the “Alkali Lake, Nebraska” quadrangle (map reduced to approximate scale 1:75,000). These lakes are found in the Sand Hills area of Nebraska where the water table (reflected in the elevations of lake surfaces) is close to the surface.
What plan did Europe introduce in 2005 to help the region fight climate change?
A) a program to become the world's leader in solar energy B) an emission trading scheme C) a research program to perfect carbon sequestration D) a tree-planting plan E) a plan to eliminate all usage of fossil fuels by 2020