An example of a density-independent factor would be ________

A) a plant parasite, such as mistletoe
B) blight (a mold disease) in a wheat field
C) cold weather causing a lake to freeze
D) suitable nest sites for a flock of warblers
E) a specialist searching for the one species of plant that is its food


C

Environmental & Atmospheric Sciences

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Precision Depth Recorder (PDR)

What will be an ideal response?

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Subduction produces mountains because subduction zones are the upwelling zones of mantle convection, which lifts the earth's surface to form mountains

Indicate whether the statement is true or false

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Which of the following statements describes what is required for a forecast to show skill?

A. It must be better than a forecast based on persistence or climatology. B. It must be accurate over more than 90 percent of the forecast area. C. It must be accurate to within 2°C of the predicted temperature. D. It must use the analogue method of forecasting.

Environmental & Atmospheric Sciences

Which of the following defines the ridges on a weather map?

A. dying hurricanes B. elongated high-pressure areas C. elongated low-pressure areas D. mountains that stall the movement of storms

Environmental & Atmospheric Sciences