Describe What are some possible benefits of single-stream recycling vs. regular recycling?

Single-stream recycling has two main advantages: Since it's so much easier than sorting out recyclables for individuals, it increases household recycling rates, and since it's easier to dump one can of stuff into a collection truck with one compartment, it saves cities money.

Benefits of Recycling: Reduces the amount of waste sent to landfills and incinerators. Conserves natural resources such as timber, water and minerals. Increases economic security by tapping a domestic source of materials. Prevents pollution by reducing the need to collect new raw materials. Saves energy.

Explanation:

it's c. elements are placed in rows based on how may valencies electrons have.

gas

explanation:

smoke is the matter of a gas