| A | B |
|---|
| chloropyll | a green substance that in all green plants |
| producer | a living thing such as a plant that makes its own food |
| primary consumer | an animal that eats green plants |
| secondary consumer | animals that eats primary consumers |
| food chain | an arrangement of organisms in which each organism feeds on the one below it in the chain |
| decomposer | a living thing that feeds on wastes of plants and animals |
| ecosystem | a community functioning as a unit with its environment |
| soil | a top layer of the earth's surface that is composed of tiny pieces |
| decay | to rot or to break down into smaller pieces |
| terrarium | a clear plastic container for plants and animals indoors |
| variable | factor or condition being tested in an experiment |
| experimental group | where the variable is being tested |
| control group | where all factors are held constant |
| experiment | a test that is used to discover or prove something |
