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Answer 1

Answer:

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Answer 2

Answer:

1. A weed is a plant considered undesirable in a particular situation, "a plant in the wrong place". Examples commonly are plants unwanted in human-controlled settings, such as farm fields, gardens.

• Weed control is important in agriculture. Methods include hand cultivation with hoes, powered cultivation with cultivators, smothering with mulch, lethal wilting with high heat, burning, and chemical control with herbicides (weed killers).

2.Keeping food covered protects your food from harmful bacteria and objects or chemicals from getting into the food. There are certain defenses that can be used for raw and ready-to-eat foods to prevent the harmful bacteria from spreading. You can package the food properly in cling foil.

• 3.Nylon fibres are very strong,fairly elastic,lightweight and lustrous.
• Nylon fibres absorb very little water,so clothes made of nylon are easy to wash and dry
• Nylon is wrinkle resistant.
• Nylon fibres have high abrasion resistance,so they are very durable.

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