What is the minimum recommended daily carbohydrate intake?
A) 30 g/day
B) 80 g/day
C) 130 g/day
D) 180 g/day
C
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When work is done by a system and no heat added to it, the temperature of the system
A) increases. B) decreases. C) remains unchanged.
The portion of the planet that is responsible for the vast majority of the Earth's annual biomass production is/are
a. swamps and marshes b. temperate forests c. Estuaries d. lakes and streams e. open oceans
How do soils become fertile?
A) deep and thorough leaching of parent material to release nutrients B) mild weathering of parent material and addition of organic matter C) human manipulation to retain moisture and improve texture D) intimate interaction with the soil biota
One long distance Olympic race is the 10,000 meter run. Which of the following is most nearly the length of this run to three significant figures in feet? [1 meter is slightly longer than 39 inches]
A) 6.09 x 10^3 ft B) 6.22 x 10^3 ft C) 1.00 x 10^4 ft D) 3.28 x 10^4 ft