All of the following increase the amount of carbon dioxide in the atmosphere except
a. Respiration
b. Photosynthesis
c. Combustion
d. Decomposition
e. none of these answers
B
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The oceans contain approximately ________ percent of all water on Earth
A) 0.7 B) 17 C) 57 D) 77 E) 97
In what form do aliphatic amines exist at physiological pH (pH= 7.4)?
A) largely as neutral molecules B) largely as their conjugate acids C) as a mixture of neutral molecules and their conjugate acid, but with a slight predominance of the conjugate acid D) as a 50/50 mixture of neutral molecules and their conjugate acids
Stream valleys are produced through combined effects of mass wasting and running water. If running water alone were responsible for creating stream valleys, how would they appear?
A) Wide valleys with flat bottoms B) V-shaped valleys C) Narrow valleys with vertical walls D) U-shaped valleys
Describe sleet and freezing rain. Why does freezing rain result on some occasions and sleet on others?
What will be an ideal response?