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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A. Massai
The Massai people are a seminomadic group, who are herder-warriors of the east African plains, they inhabit South Kenya/Northen Tanzania. The San Bushmen inhabit Southern Africa, and are not seminomadic; the Ga people are an ethnic group of Ghana and Togo, meaning this cannot be the answer as it is in West Africa; and the Zulu people again are South African and not nomadic.
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Climate is the average long-term state in which certain values of temperature, precipitation, wind speed and humidity are specific.