| A | B |
|---|
| adaptation | a characteristic of an organism that increases its chance of survival in its environment |
| atmoshphere | the layers of gas that surround Earth, other planets, or stars |
| atom | the smallest unit of a chemical element that can still retain the properties of that element |
| axis | the imaginary line on which an object rotates; an imaginary straight line that runs through a body; a reference to the line in a coordinate system or graph |
| carnivore | an animal or plant that consumes or obtains nutrients from animals |
| change of state | a physical change that occurs when matter changes to another state (liquid, gas, or solid) |
| chemical change | reaction or a change in a substance produced by chemical means that results in producing a different chemical |
| community | all the populations of organisms belonging to different species and sharing the same geographical area |
