IAEA stands for
a. International Atomic Energy Agency.
b. International Aid and Environmental Agency.
c. International Assistance and Education Administration.
d. International Aid and Economic Assistance.
e. Interdisciplinary Aid and Education Alliance.
A
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A mineral is labeled in the lab: .5 kg/m3. What could this value represent?
A) specific gravity. B) hardness. C) luster. D) density.
During a lightning event
A) a large quantity of electrons is transferred. B) there is typically only one stroke. C) the negative charge near the bottom of the cloud increases. D) the air around the conducting channel is heated to temperatures up to 30,000 K.
Which nation within the Russian Domain has the lowest Human Development Index (HDI)?
A) Armenia
B) Belarus
C) Ukraine
D) Georgia
E) Moldova
Your book states that a "sewage treatment plant removes 70% of the phosphorus and 50% of the nitrogen that flows through it". According to the Law of Conservation of Matter, there is no detectable increase or decrease in the quantity of matter during an ordinary chemical change. Assuming that only ordinary chemical changes occur in sewage treatment plants, how is the nitrogen removed?
A. denitrification B. nitrogen fixation C. biodegradation D. combustion