What proportion of the world's population lives in extreme poverty?
A. less than one-tenth
B. about one-fifth
C. about one-quarter
D. about one-third
E. nearly half
Answer: B
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Which approach is being used by some countries to protect and sustain marine biodiversity?
A. harvesting the ocean's food supply B. understanding that the sea is an inexhaustible resource C. establishing marine sanctuaries D. focusing on ocean acidification E. creating artificial ecosystems
Strictly speaking, it is correct to say that
A. voltage flows through a circuit. B. resistance is established across a circuit. C. current causes voltage. D. charge flows through a circuit.
Why do tornadoes have such high wind speeds?
What will be an ideal response?
Convert the information given in the accompanying table from U.S. Customary to SI units. Show all steps of your solutions.
