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Unit 3 Earths system
| Question | Answer |
|---|---|
| A set of layors of gases surrounding Earth | atmosphere |
| The solid portion of Earth, including the crust and upper mantle of Earth | geosphere |
| The part of Earth's crust, water and atmosphere that supports life | biosphere |
| All the waters on Earth's surface, such as lakes and seas, sometimes including water over Earths surface, such as clouds | hydrosphere |
| How much salt water Is there on Earth | 97% |
| How much fresh water I there Earth | 3% |
| How much fresh water is safe to drink Earth | Less then 1% |