What elements are basic to all living things?

An empty fuel tank can still contain and therefore can be even more dangerous than one full of liquid fuel.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous