Based on the information in the passage, what is true of gases?
Some, but not all, gases are harmful to humans.
Any gas with carbon in it is not harmful to humans.
All gases are harmful to humans.
No gases are harmful to humans.

1: True
2: True
3: False
4: False

(Question 2 might not be true, not sure)

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.