A food web is ________.
A. used only with herring life histories
B. an inverse trophic pyramid
C. a plan of interactive food chains and energy
D. a diagram of an organism's life history
E. a net for trapping marine organisms
Answer: C
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Mesocyclones
A) are formed at the same time as the actual tornado. B) do not form in association with supercells. C) intensify when the area of rotation decreases. D) require the presence of vertical wind shears.
In calm air, the air temperature is -10°F. If the wind speed should increase to 30 mi/hr (with no change in air temperature), the thermometer will indicate ____
A) a much higher temperature than -10°F B) a much lower temperature than -10°F C) a temperature of -10°F D) a temperature of -30°F
Evaluate the following statement. "Human activities contributing to global warming could cause the oceans to switch to ice-age mode."
A) This statement is true. B) This statement is false. Changes in human behavior will alleviate any global warming trends. C) This statement is false. Ice ages only begin when Earth is a certain distance from the Sun. D) This statement is partially true. Global warming may cause a change in the oceans, but it is a natural process that is unrelated to human activity.
Why is the sea level dropping in certain places like Scandinavia?
A. postglacial rebound B. sediment deposition C. shoreline erosion D. global warming