Which resource is most commonly used to produce electricity in the United States?
A. Oil
B. Water
C. Coal
D. Gas
Answer: C
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Which of the following is a correctly balanced equation?
A. 2 P4 + 12 H2 ? 8 PH3 B. P4 + 3 H2 ? PH3 C. 1 P4 + 6 H2 ? 4 PH3 D. 0 P4 + 6 H2 ? 4 PH3 E. P4 + 6 H2 ? 4 PH3
Organic matter in soil is found principally in the
A. A horizon. B. R layer. C. B horizon. D. C horizon. E. O horizon
What provides the raw material for large and complex food webs within an estuary?
a. The ocean bringing in nutrients b. Salt-tolerant plants producing carbohydrates c. Salt-tolerant plants being decomposed d. The river depositing nutrient-rich sediments
List at least three reasons an earthquake with a magnitude of 7.0 might result in more death and destruction than a quake with a magnitude of 8.0
What will be an ideal response?