Carbon is fixed in the biosphere through ________ into carbohydrate compounds
A) bacteria
B) biomes
C) photosynthesis
D) dentrification
E) transit
Answer: C
Environmental & Atmospheric Sciences
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The overall rate at which humans are producing carbon dioxide is
A. some years increasing and other years decreasing. B. increasing. C. remaining about the same. D. decreasing.
Environmental & Atmospheric Sciences
An object maintains its state of motion because it has
A) mass. B) weight. C) speed. D) acceleration. E) all of the above
Environmental & Atmospheric Sciences
An asteroid had a grazing encounter with Earth in _______________ in 1908, destroying 1000 square kilometers of forest and killing animals. No crater was found
Fill in the blank with correct word.
Environmental & Atmospheric Sciences
The sugar in deoxyribonucleic acid, DNA, is called 2-deoxy-D-ribose. It is found as a single stereoisomer. How many enantiomers of 2-deoxy-D-ribose exist?
A) 0 B) 1 C) 2 D) 4
Environmental & Atmospheric Sciences