Which method is the least feasible strategy for industries to cut energy waste?
A. Using cogeneration systems.
B. Replacing energy-wasting electric motors.
C. Switching from coal-burning power plants to nuclear power plants.
D. Recycling materials.
E. Switching from incandescent lighting to fluorescent lighting and LED lighting.
Answer: C
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Which of the following is true of a trait that creates a specific advantage for some organisms in the struggle to survive?
a. It enables individuals with the trait to leave more offspring than other members of the population leave. b. It results in greater genetic diversity in the offspring of those organisms that possess it than in those that do not possess the trait. c. It causes the ratio of male and female offspring produced to be equal. d. It results in offspring that are genetically different than the parents. e. It results in non-heritable traits being passed from parent to offspring.
More than ________ percent of Australia's exports now go to Asia; only ________ percent are shipped to Europe
A) 20; 25 B) 50; 1 C) 99; 1 D) 60; 11
Is carbon-14 an appropriate isotope for dating the metamorphic rocks at the bottom of the Grand Canyon? Explain
What will be an ideal response?
Which of the following is true of tree plantations?
A. They are not biologically diverse. B. They take a very long time to return a profit. C. They are usually clear-cut before they are sufficiently mature. D. They cannot be used for paper products. E. They contain trees that are not of a uniformly age.