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1. Direction: Write Pif the given is a physical weathering, C if chemical weathering

and B if it is biological weathering.

1. Balete tree grows at the wall of the building.

2. Construction workers use power tools to break the rocks.

3. Insects secrete acidic substance on rocks.

4. Glaciers carve its pathways.

5. Rainwater combined with iron on rocks produces rusts.

6. Carbon dioxide mix with water produces carbonic acid that reacts with

rocks.

7. Water freezes in a large crack of a rock.

8. Strong winds blow small particles of the rocks.

9. Rocks form bubbles after the heavy pour of acid rain.

10. Rocks fall down from the mountain and break.