| A | B |
| organism | any living thing |
| producer | a living thing that makes its own food energy |
| consumer | a living thing that gets its energy by eating other living things |
| ecosystem | all living and nonliving things that live in a certain location |
| microscopic | to small to be seen without a microscope |
| lines of latitude | imaginary lines on the Earth that run parallel to the equator |
| lines of longitude | imaginary lines that run between the North and South Poles |
| grid | a pattern of lines that form squares |
| degrees | units of latitude or longitude (° is the symbol for degrees) |