The most important members of hydrothermal vent biocommunities are microscopic ________

A) Archaea
B) Bacteria
C) Ediacaria
D) Eukarya
E) Zooxanthellae


A

Environmental & Atmospheric Sciences

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Which of the following is a characteristic of cirrus clouds?

A. presence of ice crystals B. low elevation C. temperature above 0° C D. only found in tropical regions

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What is the theory of plate tectonics?

A) Earth was created 6,000 years ago. B) Earth is made up of a large number of geological plates that move slowly across its surface. C) Human activities are changing Earth's surface. D) The number of tectonic plates equals the number of continents on Earth. E) Earth's continents are moving closer together.

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The greatest human population increases over the next few decades is expected to occur in

A) North America. B) South America. C) Africa. D) Western Europe.

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Because of the Coriolis force, water in a sink in the ____ Hemisphere drains ____

A) Northern, clockwise B) Northern, counterclockwise C) Southern, clockwise D) Southern, counterclockwise E) none of the above

Environmental & Atmospheric Sciences