How do natural resources keep an economy strong?

Natural resource is a key input in the production process that stimulates economic growth. Natural resources have limited direct economic use in satisfying human needs but transforming them into goods and services enhances their economic value to the society.

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Explanation:

answer: there were new carvings etched into the back of the sculpture and each shoulder was turned into a symbol of the birdman.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;