What primary product is formed during nitrogen fixation?
a. Urea
b. Carbon dioxide
c. Oxygen
d. Glucose
e. Ammonium
e
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Which color of light comes from the higher energy transition, red or blue?
A. Blue is a higher frequency and therefore corresponds to a lower energy level transition. B. Red is a higher frequency and therefore corresponds to a lower energy level transition. C. Blue is a higher frequency and therefore corresponds to a higher energy level transition. D. Red is a higher frequency and therefore corresponds to a higher energy level transition.
The strictest set of laws regulating air pollution were in place following federal action in this year
A) 1963 B) 1970 C) 1977 D) 1990
Why does the ratio of oxygen 18 to oxygen 16 in the oceans increase during an ice age?
A) More precipitated water remains on land instead of running back to the sea. B) There is a different kind of radioactivity occurring in the ocean at the colder world temperatures. C) There is a different kind of radioactivity occurring on land at the colder world temperatures. D) Sea water freezes into glaciers.
How do snow crystals form?
What will be an ideal response?