Answer:
Because of their brightness, how big they are, and how many their are
Explanation:
4.6 billion years ago
The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
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Layering is the most obvious feature of sedimentary rocks. The layers are piled one on top of the other.
The answer is false kinetic energy is energy found in objects in motion.
