What fuel is the most important source for generating electricity in the United States?
What will be an ideal response?
Answer: coal
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The major cause of a reduced human life span today is
a. Poverty b. Smoking c. Cancer d. high cholesterol e. Driving
On a weather map, a blue line with blue triangles signifies a(n) ____________________
Fill in the blank(s) with correct word
High responder crops of the green revolution produce tremendous yields
A. In response to fertilizers, pesticides and irrigation. B. Even in severe drought conditions. C. With primitive farming techniques and no chemical use. D. Even in severe drought conditions and with primitive farming techniques and no chemical use. E. In all conditions where standard crops fail.
The Ka for boric acid is 7.3 x 10^¯10. What is the pKa of boric acid?
A) -9.14 B) -4.86 C) 4.86 D) 9.14