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.
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Urbanization refers to those areas of urban that can grow by increasing human population or migration of people from rural to urban areas & then it impacts our environment like deforestation, habitat loss and decreased of biodiversity.
Air pollution due to the high concentration of traffic and industries. Increased a greenhouse gas due to which it emissions a high levels of energy consumption and transportation. Urbanization affects our environment by improper or insufficient waste or smelly problem in urban areas.
Light pollution can be a ecological issues with different consequences. loss of green space and increase of heat island is also effected. It also affect our health due to increased risk of disease by overcrowding .
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Answer:
of the nature of a hierarchy; arranged in order of rank.
a drop of water may spend over 3,000 years in the ocean before moving on to another part of the water cycle
The first hispanic heritage was celebrated in the united states in the year 1968
