Which one of the following is a molecule but not a compound?
A) CO2
B) H2O
C) O2
D) All of these would be considered both molecules and compounds.
C
Environmental & Atmospheric Sciences
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The mantle can be separated into two different portions-the lower mantle and the upper mantle. The lower mantle is
A. composed of putty that flows like molasses. B. predominantly liquid. C. rigid and cannot flow. D. completely solid due to extreme pressure that prevents rocks from melting.
Environmental & Atmospheric Sciences
What percentage of Earth's water is freshwater?
A) 3% B) 25% C) 50% D) 85%
Environmental & Atmospheric Sciences
Density of a phenomenon and clustering of the phenomenon are the same
Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
Minamata disease is an example of humans ingesting ________-contaminated sea life.
A. mercury B. DDT C. lead D. PCB E. chlorine
Environmental & Atmospheric Sciences