3A Owen Griffin

1234567891011
Across
  1. 1. plants and animals How did some of the animals get nitrogen?
  2. 3. What form is commonly used with plants?
  3. 5. into water vapor?
  4. 6. five percent how much of the earth is water?
  5. 10. seven percent how much of the earth is saltwater?
  6. 11. Carbon deposits into the ocean floor when the animal what?
Down
  1. 1. dioxide Green house gases and what will make the world frozen without it?
  2. 2. What do plants need to grow?
  3. 3. Can nitrogen be used as a nutrient by plants and animals?
  4. 4. percent how much of the earth is freshwater?
  5. 7. what do you call the process in which water
  6. 8. five percent how much is land?
  7. 9. Is the growth place for plant limited or unlimited?