A problem with HFCs is that they __________.
A) are toxic pollutants
B) cause ground-level ozone
C) affect plant photosynthesis
D) are strong greenhouse gases
Correct Answer:
Verified
Q56: The main source of anthropogenic carbon monoxide
Q91: Which molecule directly requires photosynthesis to be
Q92: Which is a sink for carbon dioxide?
A)photosynthesis
B)ultraviolet
Q93: At sea level there are _ pounds
Q94: Which city has the highest air pressure
Q96: Which is a water-vapor source?
A)evaporation
B)condensation
C)ultraviolet radiation
D)rainfall
Q97: Which molecule depends on ultraviolet radiation to
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