Which water resource is most likely to dry up for part of the year?

a: pond
b: lake
c: reservoir
d: river

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

level 4 to level 2 : ))