-Our actions affect not only us, but the environment around us.
-People should be more conscious of the
damage they do to their bodies.
Are these topics or themes?

Themes

Explanation:

A topic is normally presented in a more open-ended way while these are presented as statements, proving that they resemble morals more than topics.

Themes

Explanation:

Topics are different things to write about, and these are the messages (themes) that you learn or come from a story. I hope this helps!

Penn Foster Students: He must always go by the name Pip.