Weeds affect the crop plants by:

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(B) Weeds are unwanted plants that grow in a cultivated field along with the main crop.They affect crop plants primarily by competing for essential re

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Competing for various resources of crops (plants) causing low availability of nutrients

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(B) Weeds are unwanted plants that grow in a cultivated field along with the main crop.They affect crop plants primarily by competing for essential resources such as sunlight,water,space,and nutrients.This competition reduces the availability of these resources for the main crop,leading to stunted growth and lower yields.Therefore,option $B$ is the most accurate description of how weeds negatively impact crop production.

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