An object raised 5 m gains a certain amount of potential energy. If it is raised 10 m, its gain in potential energy is
A. twice as much.
B. less.
C. four times as much.
D. the same.
Answer: A
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A population in which the total fertility rate is 2 means that
A) birth rates and death rates are roughly equal. B) the population is neither increasing nor decreasing. C) the population will double in about 40 years. D) the population will decline by half in 40 years. E) both the birth rates and death rates are roughly equal and the population is neither increasing nor decreasing.
Condensation nuclei may be made up of salt from the ocean
a. True b. False
In the tropical savanna climate, most of the rain falls ____
a. in the low-sun season b. throughout the year c. in the high-sun season d. due to orographic uplift
What are some of the economic and political challenges that have disrupted pineapple and sugar cane production in Hawai'i during the past half-century or so?
What will be an ideal response?