Unit 4 Vocabulary

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Across
  1. 3. Groups of different living things all in the same place.
  2. 4. When things that are not supposed to be in the environment show up.
  3. 5. ________ change; when weather changes over time.
  4. 8. _________ factors; living things that affect an environment.
Down
  1. 1. The area around all living and nonliving things.
  2. 2. ____________ relationships; how different things in an ecosystem work together.
  3. 6. __________ factors; nonliving things that affect an environment.
  4. 7. Habitat ________; when living things lose where they live.