Across
- 3. When carbon-based substances change to become fossil fuels.
- 6. The individuals of the same species that live in a certain place as a certain times.
- 8. Over and over again movement of matter.
- 9. The first species that arrive in an otherwise barren area.
- 11. When a new community begins where nothing has ever been.
Down
- 1. A process made up of three main processes: evaporation, condensation, and precipitation.
- 2. When a community has been destroyed or disturbed.
- 4. The populations of different species that live and interact in the same place.
- 5. Result of connecting all possible food chains
- 7. Flow that shows how living things are connected to each other by the food they eat.
- 10. The predictable pattern of change in ecosystems.
- 12. The closely related group of living thing that are able to mate a reproduce.