In 1900 more than ________ percent of America's energy needs were satisfied by burning coal.
A. 10
B. 25
C. 75
D. 90
E. 50
Answer: D
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Contamination in the Love Canal was from a(n)
A. Active petrochemical plant B. Major toxic waste disposal firm C. Long-abandoned city and chemical factory dump D. Sanitary landfill E. Neighboring county whose groundwater seeped into the canal
Reusing items over and over provides several advantages, but ____ is not one of them.
A. cutting waste B. creating local jobs C. cutting greenhouse gases D. reducing bacterial infections E. saving money
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.
Indian reservations are among the poorest communities in both the U.S and Canada. What problems do reservations currently experience?