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A special chemical messengers of the body that are produced by the endocrine glands. These special messengers control most of the body functions right from primary needs like hunger to complex system and function like reproduction and emotions. Hormones are made and secreted by specialised tissue in the body called endocrine glands.
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Lightning is observed as a bright streak of light during a thunderstorm. Lightning is always accompanied by the sound of thunder. The transfer of charge from clouds to the earth or from cloud to cloud is called lightning. In simple words; lightning is an electric spark which happens on a grand scale in the sky.
- During a thunderstorm, the air currents move upward and water droplets move downward. These movements take at very fast pace and it results in separation of charges in the clouds.
- The positive charges accumulate at the upper edges of the clouds and the negative charges accumulate at the lower edges of the clouds. Scientists are yet to understand the exact reason for this.
- At the same time, the ground becomes positively charged.
Posted by Yamuna Yamms 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
The sliding friction is less than static friction because of the interlocking of irregularities in the two surfaces. When the object starts sliding the contact points on its surface, do not get enough time to lock into the contact points on the floor.
So the sliding friction is slightly less than the static friction.
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- Frogs lay cluster of eggs in water. They are called frog spawn.
- The eggs undergo repeated cell division to form embryo.
- After 21 days. Embryo leaves the jelly-like shell and develops into a tadpole which is attached to weeds in waters.
- After 5 weeks, the tadpole begins to transform into a young frog.
- After 11 weeks, a fully developed frog emerges from water.
Posted by Raghav Bichali 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
- Frogs lay cluster of eggs in water. They are called frog spawn.
- The eggs undergo repeated cell division to form embryo.
- After 21 days. Embryo leaves the jelly-like shell and develops into a tadpole which is attached to weeds in waters.
- After 5 weeks, the tadpole begins to transform into a young frog.
- After 11 weeks, a fully developed frog emerges from water.
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Full form of LPG is 'liquefied petroleum gas'. These are flammable gases also referred to as simply propane or butane,are mixture of hydrocarbon gases used as fuel in heating appliances, cooking equipment and vehicles.
Posted by Kajamuki Kajamuki 7 years, 3 months ago
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Yogita Ingle 7 years, 3 months ago
Binary fission is a method of asexual reproduction. In this method the body of the animal divides into two halves. The nucleus divides into two, followed by the division of the whole body. It gives rise to two individuals. Amoeba reproduce by binary fission.
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A device used to measure charges is known as electroscope.
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Adamya Bumabak 7 years, 3 months ago
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