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Earh's systems test
| Question | Answer |
|---|---|
| A set of layers of gases surrounding earth | atmosphere |
| A solid portion of earth ,including the crust and upper mantale of earth | geosphere |
| A part of earth's crust,water, and atmosphere that supports life | biosphere |
| All the waters on the earth's surface,such as lakes and seas, sometimes including water over earth's surface, such as clouds | hydrosphere |
| what is the amount of salt water is in the earth's ocean | about 97% |
| What is the amount of freshwater that is found in glaciers.ice caps.groundwater,lakes, and rivers | about 3% |
| how much of freshwater is found on earth that is potable | less than 1% |