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Meghna Thapar 5 years, 11 months ago
There are five types of bones in the skeleton: flat, long, short, irregular, and sesamoid.
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Meghna Thapar 6 years ago
The bright flash of light which we see in the clouds is called lightning. Lightning is an electric spark on a huge scale which is caused by the accumulation of electric charges in the clouds.
Posted by Kavin Prayoth 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
In rooftop harvesting, the roof becomes the catchments, and the rainwater is collected from the roof of the house/building. It can either be stored in a tank or diverted to artificial recharge system. when water comes through pipe from roof before storing water it is filtered by filter paper that is situated in pipe or at the hole of tank . we can use this water but it is not used as drinking purpose.
Posted by Sadia Mohammed 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
2. The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
Posted by Sadia Mohammed 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
The cycle of processes by which water circulates between the earth's oceans, atmosphere, and land, involving precipitation as rain and snow, drainage in streams and rivers, and return to the atmosphere by evaporation and transpiration.
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Meghna Thapar 6 years ago
The method of separating husk from grains with the help of wind is called winnowing. This method is based on the fact that the husk is very light and the grains are comparatively heavy.
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Meghna Thapar 6 years ago
The electric circuit provides a complete path for electricity to pass between the two terminals of an electric cell.
Posted by Anand Sadani 7 years, 3 months ago
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Meghna Thapar 6 years ago
Adaptations of Polar Bear:
Their white fur gets camouflaged against the white background of snow protecting it from predators and also helps them catch their prey.
Two thick layers of fur act as an insulator protecting them from the surrounding harsh climate.
The polar bear carries out physical activities like swimming in order to keep warm
In order to avoid getting overheated they move slowly and rest often.
A strong sense of smell helps them in catching a prey
Can remain submerged underwater closing its nostrils.
Adaptations of Penguins:
Its white colour helps it blend in with the white background
Thick skin and a lot of fat protect it from cold
They huddle together in groups to keep themselves warm
They have webbed feet and they streamline their body while swimming which makes them good swimmers
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Meghna Thapar 6 years ago
Sedimentation is the deposition of a solid matter at the bottom of a liquid. Suppose in a liquid some solid particles are suspended into it and this liquid is allowed to stand for sometime then the heavier particles will sink to the bottom of the beaker. The two layers are obtained after the process of sedimentation. The upper layer is of clear liquid and the lower layer is of sediment having solid matter. This upper layer is poured into another beaker to separate it from sediment. Such a process of pouring out of a liquid from a vessel without disturbing the sediment is called decantation. For example, a mixture of sand and water contains sand particles suspended in water. This sand can be separated by the process of decantation. The method of decantation can be used for separating two immiscible liquids like water and oil.
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