A drainage basin is a region of land where water from rain or snowmelt flows into an ocean, lake, river, or other body of water.
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Oct 2, 2019 - However the moon is already increasing the size of its orbit around the earth and would continue to do so with a smaller earth just not quite as quickly. This is all assuming the object replacing the earth is still made out of the same stuff such as rock, metal and water.
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The correct statement for comet is - ( a ) They have highly elliptical orbits around the sun
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The comet is made up by the composition of dust , water , ice , rock and frozen gases like , the carbon dioxide , methane , ammonia and carbon monoxide .
Comet shows a process called outgassing , i.e. , the comet passes close to the sun , then they start to release gases , which is visible in the form of a comet's tail .
The comet and its tail glows by the sun and becomes visible when the comet passes through the solar system , because the dust partials reflects sunlight directly and the gas glows due to ionization process.
The orbital of comet is usually highly eccentric elliptical path .
A rift valley is a linear shaped lowland between several highlands or mountain ranges created by the action of a geologic rift or fault. A rift valley is formed on a divergent plate boundary, a crustal extension or spreading apart of the surface, which is subsequently further deepened by the forces of erosion.
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How lionfish will affect native fish populations and commercial fishing industries has yet to be determined. What is known is that non-native species can dramatically affect native ecosystems and local fishing economies. Experts are carefully studying these invaders to better understand their role in, and potential threat to, Atlantic Ocean ecosystems.
Lionfish have venomous spines that can be very painful. Scientists are also actively studying these fish to better understand the potential threat that lionfish pose to key reef and commercial fish species. Learning more about the habits and preferences of lionfish in non-native waters also helps experts determine where to look for these invasive fish.
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