4. Veena went to a field with her mother.There is a playground to the left side of the field. Veena went to the playground.She had seen some material present in the soil which polluted the soil. Which are these material?
(a) Polythene bags
(b) Plastic
(c) Manure
(d) Both (a) and (b)
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Answer:
both a and b
pls mark my ans as brainlist