K-strategists are
A. large and long-lived and controlled by density-dependent factors.
B. large and long-lived.
C. controlled by density-dependent factors.
D. large and short-lived.
E. small and long-lived.
F. None of these are correct.
Answer: A
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A) primary producers. B) primary consumers. C) secondary consumers. D) decomposers and detritus feeders.
In 1968, the U.S. Congress passed the ____ to establish protection of rivers with outstanding wildlife, geological, scenic, recreational, historical, or cultural values.
A. National Rivers and Wetlands Act B. National Rivers of Interest Act C. National Wild and Scenic Rivers Act D. Federal Freshwater Act E. Federal Scenic Waterways Act
The oldest ________ is approximately 4.4 billion years old and was found in ________.
A. fossil; Scotland B. rock; Canada C. mineral; Australia D. isotope; Greenland E. unconformity; Hawaii
Why is there salt in the oceans?
A. Precipitation B. Runoff from the continents C. Comets D. Melting of ice at the Poles