What is the average salinity of ocean water?
a. 0.5%
b. 3.5%
c. 10.5%
d. 20.5%
Ans: b. 3.5%
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Cutting back on the pollutants that cause acid rain is one solution to the problem of acidified lakes. Suggest another.
A. add ammonium ions to the lakes B. stop using NaCl to salt the roads in the winter C. add chlorine and filter the water to remove any acidity in the lake D. add a neutralizing substance such as limestone
Michael Pollan, in his landmark book The Omnivore's Dilemma, investigates and discussed the practices of meat production in modern, industrialized agriculture in the United States
After his extensive study, he writes that he believes hunting for meat may be the more humane and wise choice. He cites the fact that game animals at least live their lives in a free, uncaged environment, compared with beef cattle that spend much of their lives confined in feedlots, standing in manure and eating grain they are not designed to digest. Additionally, the game animal typically has a relatively quick and painless death. Discuss this issue. Include in your discussion aspects of animal cruelty, relative availability of the meat to satisfy food needs for a large population, and the relative impacts of farming versus hunting on biodiversity. What will be an ideal response
The subsolar point
A) never moves more than 23.5 degrees in a year. B) is at the Tropic of Cancer on the June solstice. C) reaches above the Arctic Circle only in summer. D) is independent of the solar declination.
Which of the following is not an effect of climate change in the oceans?
A) Decreasing ocean acidity B) Increasing ocean temperatures C) Increasing hurricane intensity D) Changes in deep-water circulation E) Melting of polar ice