Answer:
Passing through clay beds filters groundwater, purifying out soil, or organic materials, and contaminants to leave behind pure water that fills up aquifers.
Explanation:
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Answer:
approximately 4.5 billion years ago
Explanation:
Answer:
Explanation:
Only about five percent of starches are broken down in the mouth. (This is a good thing as more glucose in the mouth would lead to more tooth decay.) When carbohydrates reach the stomach no further chemical breakdown occurs because the amylase enzyme does not function in the acidic conditions of the stomach.
C hydrosphere, lithosphere, biosphere
