Crossword Puzzle: Earth's Spheres

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Across
  1. 3. All life forms on Earth(plants, animals, germs, etc)
  2. 4. A mixture of gases that surround a planet or moon - contains clouds, ozone, water vapor and dust
  3. 5. To come together and have an effect on each other
Down
  1. 1. The part of the Earth consisting of the crust and core-made up of soil, dirt, rocks, minerals, mountains, canyons, volcanoes etc.
  2. 2. All the water at and near the surface of the Earth, 97% of which is in oceans, can be salt or fresh