B. what ultimately fuels the water cycle? (4 points)

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.

a substance in a physical state in which it does not resist change of shape and will expand indefinitely to fill any container.

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