How was radioactive carbon dating useful for the atmospheric calcium additions calculations?
A) It was not useful.
B) It helped to establish the amount of calcium present.
C) It helped to establish the rate of deposition.
D) It was used as a standard amount for a mineral in the soil.
Answer: C
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A) Louis Pasteur B) Antony van Leeuwenhoek C) Charles Darwin D) Jean Baptiste Lamarck
What is environmental resistance?
A) The decline in population growth B) The effect of limiting factors on the environment C) The maximum population growth in an environment D) All of these choices
Since the 1980s, U.S. savings rates have remained steady at 4%
Indicate whether the statement is true or false
Productivity is highest in ________
A) tropical oceans B) polar oceans C) temperate oceans D) none of the above