In 1950, 29% of the world population lived in urban areas. Today, ________ live in urban areas, with that number growing annually
A) 81% B) 35% C) 45% D) 51%
D
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Which of the following statements is true about the transfer of energy, matter, or momentum in the atmosphere?
A. Momentum is usually transferred from the surface upward. B. Energy transfer occurs when water changes state between solid, liquid, or gas. C. No transfer of energy, matter, or momentum can occur in the polar part of the atmosphere. D. Matter is transferred so effectively that the spatial distribution of matter in the atmosphere is uniform.
A solution is prepared by dissolving 53.5 grams of ammonium chloride, NH4Cl in 4000. grams of water? What is the freezing point of this solution? [The freezing point depression constant for water is 1.86°C/mole solute in 1000g of water]
A) -0.37°C B) -0.47°C C) -0.93°C D) -1.86°C
A(n) ____________________ is a trough-shaped, weak, low-pressure system that progresses slowly westward in the trade wind belt of the tropics
Fill in the blank(s) with correct word
The difference between the photosynthetic production of carbohydrates and the respiration loss of carbohydrates is known as
A) net primary productivity. B) compensation point. C) free air CO2 enrichment. D) net photosynthesis.