20. Whic rock can still undergo metamorptus A Rock A only B. Rock 8 only C Rock C only D. Both Rock A and B only E Both Rock B and C only F Both Rock A and C only G Rocks A B and C 21. Which stalement is correct about the figure glven above? A Rock B is an igneous rock. B Rocks A and C are igneous rocks. C Rocks A and B are sedimentary rocks. D. Rocks B and C is a melamorphic rock

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Q: Why is it so important to solve the Light pollution?

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