a part or aspect of something abstract, especially one that is essential or characteristic.

It is when plants take energy from the sun and turn it into sugar to help it grow.

Something written below the line of text

physical thing in general

a group of atoms bonded together

a thing that is composed of two or more separate elements

Cellular respiration is when organisms use oxygen to break down food molecules to get energy from them to use. Cellular respiration can happen in the cells of animals, plants, and probably some other things too. And turns it into sugar.

the basic unit of a chemical element.

a multiplier or factor that measures some property.