green plants are the source of food (I) primary (ii) secondary (iii) all of these (iv) tertiary
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Answer:primary
Answer:primaryExplanation:
Answer:primaryExplanation:i hope this will help you PLZ GIVE A THANK YOU
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/- primary
Explanation:
/- primary
Because Primary activity includes those occupations which are closely related to man's natural environment. Gathering, hunting, fishing, lumbering, animal rearing, farming and mining are some of important examples of primary activities.
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