Which type of cloud can sometimes be found in a layer other than the troposphere

Cirrus

Explanation:

Cirrus clouds are found in the atmosphere

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.

56 moles of   lieter in chemistry