Question

synthetic materials, natural resources quick check
how is plastic made? (1 point)
oil and natural gas are chemically broken down into small compounds that combine to form plastic.
oil and natural gas are broken down from long chains into the smaller compounds we call plastic.
coal and natural gas are broken down from long chains into the smaller compounds we call plastic.
coal and natural gas are chemically broken down into small compounds that combine to form plastic.

Explanation:

Plastic is a synthetic material. It is made from oil and natural gas. These raw materials are chemically broken down into small compounds. These small compounds then combine (through polymerization processes) to form plastic. Coal is not a typical starting material for making most common plastics. Also, oil and natural gas are not "broken down from long chains" to directly become plastic (plastic is formed by building up from small units, not breaking down long - chain hydrocarbons of oil and gas in that way).

Answer:

Oil and natural gas are chemically broken down into small compounds that combine to form plastic.