Science

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