Judge the following sentence according to the criteria given below: Planktonic single-celled organisms that live in colder waters have more need for extensions to help them float near the surface BECAUSE the colder seawater has a higher viscosity
than warm seawater. 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.
D
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If the total global production of grains cannot be significantly increased in the next 50 years, and the human population continues to increase by perhaps 50%, how will we feed the people without destroying the world? One strategy that would likely
succeed is to A) increase our use of fossil fuels in agriculture. B) engineer plants that can grow without sunlight. C) greatly reduce the amount of meat in our diets. D) increasingly rely on fungi for nutritional needs.
Which type of strength test measures the shear strength of a material along the failure plane?
a. triaxial test b. consolidation test c. unconfined compression test d. direct shear test
If the mass of Earth somehow became half its original mass with no change in its size, your weight would
A. remain the same. B. decrease to one-half. C. decrease to one-quarter. D. none of the above
Hydrogen sulfide, H2S, burns in the presence of oxygen, O2, to produce water, H2O, and sulfur dioxide, SO2. Through this reaction, is sulfur oxidized or reduced? 2 H2S + 3 O2 ? 2 H2O + 2 SO2
A. Sulfur is oxidized. B. Sulfur is both oxidized and reduced. C. Sulfur is reduced. D. Sulfur is neither oxidized nor reduced.