The biosphere is best defined as ________
A) all living and nonliving parts, including the flow of energy and matter
B) all Earth's organisms and the nonliving environment with which they interact
C) all Earth's organisms and their physical and aquatic environment where energy and matter are cycled
D) a grouping of plants and animals that interact with one another
E) a regional grouping of plants, animals, and abiotic factors
Answer: B
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Why is the average sediment thickness in the Pacific Ocean less than that of the Atlantic Ocean?
a. The Pacific is smaller in area than the Atlantic. b. Ocean trenches trap sediments. c. More rivers feed into the Pacific. d. Lithification occurs more frequently in the Pacific.
e. More areas of the Pacific have experienced glaciation.The use of nuclear power throughout the world is generally
A) uneven, ranging from 0 to 74%, depending on the country. B) uneven, ranging from 3 to 22% in different countries around the world. C) consistent, with most developed countries generating most of the electricity with nuclear power. D) steadily declining, with most countries planning on phasing out their nuclear plants.
Why are the deep ocean basins covered with red clay deposits?
a) Red clays are formed from submarine weathering of other sediments. b) Clay particles are carried to the middle of the oceans by wind and currents. c) Only the deep ocean has the right pressure, temperature, and oxygen conditions to form red clay. d) Red clay dominates because of the near absence of other lithogenous and biogenic particles that would otherwise dilute it. e) Clay is formed at hydrothermal vents, which are found in the deep sea.
Wood consumption by humans in developing countries is primarily used for ________
A) solid wood products B) fuel C) manufacturing homes D) building E) making paper