- Niels Bohr
- Amedeo Avogadro
- Joseph Black
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Author: Zabeehullah
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- Allotrope
- Isomers
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- Vitamin A
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- black solid
- red- brown liquid
- colourless gas
- highly inflammabl e gas
- Copper and Zinc
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- copper,nick el
- copper, tin
- copper, silver
- copper, zinc
- Rice
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- Oilseed
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- Physiologica l
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- Rising tide while meeting river currents
- Friction from prevailing winds
- Spring tide and strong winds
- Unequal heating of oceans
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- Plantophyta
- Carbon dioxide
- Oxygen
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