Which of the following time periods does the Maunder minimum refer to?
A. when the Earth was closer to the sun than it is now
B. when the tilt of the Earth's axis was less than it is now
C. when the Earth was in the middle of an ice age
D. when there were fewer sunspots on the sun than now
Answer: D
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Symbiosis means
A. Commensalism B. Living together C. A relationship in which both species benefit D. A relationship in which one species benefits and the other does not benefit E. A parasitic relationship
A more sustainable crop production technique called ______________ mimics nature by promoting biodiversity, providing multiple habitats for natural predators, and assuring that if one crop is lost there are others to replace it.
Fill in the blank(s) with the appropriate word(s).
Home appliances in standby mode can account for up to 25 percent of a monthly electric bill.
Answer the following statement true (T) or false (F)
How are clouds classified?
A. Size and shape B. Altitude and size C. Altitude and shape