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jahanzaib
Apr 28, 2020, 12:08 PM
There are alot facts of our daily life which we do not know.Like why our fingers get wrinckled in water.Why green colour is mostly used in hospitals.A metal which melts at room temperature.Why our sin colour goes black in sunlight.etc
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jahanzaib
Apr 23, 2020, 9:14 AM
The immune system is a body natural system that fights against the fight against diseases and protects the body like...
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