Most of the tallgrass prairies have been converted ____.
A. to grazing lands
B. for citrus production
C. to homesteads
D. to croplands
E. to vineyards
Answer: D
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Penguins are only found in the Northern Hemisphere
Indicate whether the statement is true or false
Which of the following generally causes stomata to close?
a. release of abscisic acid by the roots b. a drop in CO2 concentration in leaf air spaces c. exposure to red light d. a drop in O2 concentration in leaf air spaces e. an increase in water in the soil
During a baseball game a batter ducks to avoid a wild pitch. In this situation, the ____ is the stimulus and ____ is the response.
A. pitcher; the batter B. pitcher; wild pitch C. ducking; wild pitch D. wild pitch; ducking
List and describe the body's innate defenses.
What will be an ideal response?