Answer:B.
It was used to prove that smoking causes health problems.
Explanation:
<span>Which of the following is true of all greenhouse gases?
</span>
C. THEY TRAP ENERGY IN THE ATMOSPHERE.
They are not naturally occurring. They are the result of human activity like using electricity, burning fuel, etc.
They don't exist in fixed quantities and they don't reflect incoming radiation. The volume of greenhouse gases emitted depends on the activity done. It also does not stay in one place, it moves around and combines with other green house gases; trapping heat in the atmosphere and making the Earth warmer.
300 Identified and confirmed with the exception of 200 that still need to be evaluated.
B is not part of the cell theory; there are many types of cells that do not have cell walls, so the statement cannot even be generally true.
