The nutrient-poor open ocean tends to support a(n) ________ biological pump compared to coastal and upwelling regions.
A. ballasted
B. efficient
C. complex
D. inefficient
Answer: D
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What is the function of the thick outer coverings of rattlesnakes and insects in desert biomes?
a. to prevent sunburn b. to reduce water loss through evaporation c. to prevent drowning during typical desert flash floods d. to prevent sunburn and reduce water loss e. for protection during competitive action during mating seasons
Judge the following sentence according to the criteria given below: The net result of an increase in atmospheric moisture should be a decrease in air temperature BECAUSE the heat absorption of water vapor in the atmosphere dominates over the higher
reflectivity of clouds. A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.
Which type of geography deals with the world as it is and with the world as it might be made to be?
A. cultural geography B. physical geography C. human geography D. systematic geography
What is the ratio of parent-to-daughter atoms when exactly one half-life has elapsed?
A. 1:3 B. 1:1 C. 1:2