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Surface mining. They use large trucks and shovels to extract the oil sands. Only 20% of all oil sands are close enough to the surface to be mined.
Answer:
The sun
Explanation:
The sun drives the water cycle. The sun evaporates water from the oceans, seas, lakes and other bodies of water and also from plants through the process of transpiration. The evaporated water then forms into clouds and when it gains enough mass it falls back to Earth. This is a closed system so that means that this is the same amount of water that has always been present on Earth.
Answer:
If a prime number is an integer, then the number is odd
Explanation:
