The tiny pieces that all matter-all the stuff in the world-is made of

A closed ecosystem made by humans

A type of atom that makes up molecules such as carbon dioxide and energy storage molecules

a molecule made of carbon and oxygen atoms

Matter that makes up the living and dead organisms in an ecosystem

the chemical reaction between oxygen and glucose that releases energy into cells

the part of a cell where photosynthesis happens

to link two or more things

an organism that needs to eat in order to get energy storage molecules (such as starch and fat)