A comet is a lump of rock and ice. Spacecraft have flown by comets. A comet only has a tail when it is near the sun. Most comets come from the Kuiper belt. A comet has actually been witnessed hitting a planet. Most comets have short orbital periods.
A comet is a tiny, frozen entity in the Solar System that heats up and starts to emit gases as it approaches the Sun. This process is known as outgassing. This results in an apparent atmosphere or coma, and occasionally a tail as well. These occurrences are caused by how the solar wind and solar radiation interact with the comet's nucleus.
The size of comet nuclei varies between a few hundred meters and tens of kilometers, and they are made up of loose clumps of ice, dust, and tiny rocky particles. A comet's orbit is typically very eccentric and elliptical, and its orbital period can range from a few years to possibly millions of years.
Learn more about Kuiper Belt here:
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Answer:
Han?
Explanation:
If by civilizations you mean ethnic groups it would be the Han.
Answer:
Fishing
Explanation:
Fishing represents the manufactured products that are easily transported by the lakes and rivers in the Great Lakes area. This is because the vessels that promote this transport already have appropriate equipment to store this type of product in an appropriate and efficient manner that optimizes the quality of the product, keeping it fresh and in good quality until it arrives at its destination.
The answer would have to be A.
