The circulation of Nitrogen in the nature maintaining its percentage in atmosphere is known as_____. *
What are weeds?Name one weedicide.
Write any 3characteristics of Synthetic fibres ( OR ) Plastics .
Differentiate between metals and nonmetals based on their physical properties .
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1. Nitrogen cycle
2. Weeds are undesirable plants. Weedicides include 2,4D
3. Plastics are synthetic, non-biodegradable and polymers
4. Nonmetals are brittle while metals are malleable and ductile
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