For the following reaction, identify whether the compound in bold is behaving as an acid or a base. H3PO4 + H2O ? H2PO4- + H3O+
A. acid
B. base
C. neither
D. both
E. none of the above
Answer: B
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Which of the following forms of air pollution is most directly linked to increased incidence of asthma and bronchitis?
a. Ozone b. VOCs c. Radon d. SPMs e. sulfur dioxide
The length of twilight depends on ______
a. ?just the seasons b. ?just the latitude c. ?just the longitude d. ?season and latitude e. ?season and longitude
What happens when a glacier encounters the sea or a lake?
A. White icebergs float but blue icebergs sink to the bottom. B. The ice is more dense than water and so scrapes along the bottom. C. Large blocks of ice collapse off the front of the glacier and become icebergs. D. Rocks released from melted icebergs float on the water surface. E. All of these choices are correct.
Which of the following states is expected to experience the greatest increase in temperature by the year 2100?
A) Florida B) Hawaii C) Alaska D) Iowa E) California