Across
- 1. – A long period without rain.
- 4. – Water stored beneath Earth's surface.
- 6. – The reduction or exhaustion of a resource.
- 7. – The height of the ocean’s surface.
- 8. – The increase in Earth's temperature due to greenhouse gases.
Down
- 2. – The increase in volume of substances as they get warmer.
- 3. – Catching too many fish, leading to a decline in fish populations.
- 5. – Not suitable for living.