Across
- 1. life connected with the planet Earth
- 3. the simplest and smallest forms of life.
- 4. the state in which somebody suffers or dies because they have no food
- 7. the mixture of gases that surrounds the earth
Down
- 2. enough for a particular purpose; as much as you need
- 5. to become different; to make somebody/something different
- 6. a formal set of ideas that is intended to explain why something happens or exists