Put a check (√) if the statement can cause of weathering and (X) if not. 16. The contraction and expansion of rocks due to temperature changes can cause the rocks to break. 17. Acid rain acts on monuments, statues, and pavements contributing to the slow weathering of rocks that make up these structures. _ 18. The reaction between oxygen, iron minerals, and sulfur mineral can change the composition of rocks. _____19. Burrowing of animals, earthworms, and insects also break rocks by making holes through rocks and soil. ______20. Play outside with friends.