| A | B |
|---|
| oasis | A small area in a desert region where fresh water is usually available from an underground spring or well. |
| flammable | Something that will catch fire easily and burns quickly. |
| reserve | Something available for future use. |
| petroleum | An oily, flammable liquid formed from the remains of ancient plants and animals. |
| nonrenewable resource | A natural resource that cannot be quickly replaced once it is used. |
| standard of living | A measurement of a person's or a group's education, housing, health, and nutrition. |
| permanent | Continuing without real change |
| arable | Land suitable for growing crops. |
