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The cropping methods which were invented by man because in this pollute world growing plants is difficult becoz of his inventions we are eating food today .without technology and power we can be because our before generations our ansestors lived without them so cropping methods were the best invention
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But i want topic on which I can write
What is that topic
Man's best invention is twig tooth brush, fire, wheel. but the best is twig tooth brush& cropping methods it gives us longer life. please mark this as best

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What's a twig tooth brush
using tooth brush using twigs as tooth brush. for example, using neem twigs
pls mark mine as best
pls gehu
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