interaction non living things and living things

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Across
  1. 3. it is a thin layer of material covering the surface of our Earth
  2. 4. it is important to all living thing.Living things cannot survive without it
  3. 5. plants need it ,carbon dioxide and water for photosynthesis
  4. 8. wind also help to disperse fruit and its seeds
  5. 9. it is a season in europe.spring,summer,_____,autumn and winter
  6. 10. The invisible gaseous substance surrounding the earth, a mixture mainly of oxygen and nitrogen.
Down
  1. 1. it has a streamlined body with no antennae or fins or arms or legs! This streamlined shape is an adaptation to living in narrow burrows underground and the need to move easily through the soil
  2. 2. Some birds avoid winter by______or travelling to warmer places where they can find food and shelter
  3. 6. it make living thing adaption.it is degree of internal heat of a person's body
  4. 7. during winter,most will______by going into a deep sleep