Across
- 3. A group of different species that live in the same area.
- 4. Humans use this have once they eat that allows us to run, walk, read, dance and think
- 6. The smallest part of a substance that has the same properties of the substance.
- 8. The process by which living things produce offspring.
- 9. To reuse the same matter in different forms.
- 10. Anything that has mass and takes up space.
Down
- 1. A group of organisms of the same species that live in the same area.
- 2. The process cells use to release energy from food is ____ respiration.
- 5. This is made of all Earth's ecosystems, the highest level of interaction.
- 7. The source of energy for almost all ecosystems on Earth.