I'd say that the answer is b.
I am pretty for sure the answer is roots.
Answer:
Hey!
Your answer is City B - the air pressure is less so boiling occurs at a lower temperature!
Explanation:
The HIGHER the pressure the HIGHER the boiling point of a substance is...
Boiling Points and Pressure are DIRECTLY PROPORTIONAL...
From this we can conclude that City B is at a higher elevation as the boiling point of the substance is lower than at City A.
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Answer:
A. It can cause land subsidence
Explanation: