Finish the quote: “It’s not only about changing light bulbs, it’s about changing

It’s not only about ‘changing light bulbs’ – it’s about changing attitudes and behavior.

Explanation:

it's about changing attitudes and behavior.

1 a

2 d

3 a

4 c

explanation:

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.