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Earth surface vocab
Question | Answer |
---|---|
Soil | a mixture of small particles of rock, humus, air, and water |
Humus | a mixture of decomposed plants and animals in soil |
Nutrient | a substance that provides nourishment |
Decompose | to break down or decay |
Silt | a mixture of sand, silt, and clay |
Resource | something that is used |
Renewable resource | a natural resource that can be replaced quickly |
Non-renewable resource | a natural resource that can not be quickly replaced |
Retain | to hold, or keep inside |
Conserve | to use wisely, to not waste |
Natural gas | an invisible, odorless gas that is used for energy |
Coal- | a plant-based solid resource that can be burned for energy |