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Pawan Pandey
Aug 1, 2023, 10:25 AM
# Define and describe the nervous system.
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Pawan Pandey
Aug 1, 2023, 7:11 AM
Sound is a type of energy which is caused by the vibrations of bodies.
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Pawan Pandey
Aug 1, 2023, 7:10 AM
#Do you know a computer at your home?
# What do you do by using computer?
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