11. What was the weathering agent in the Iab? Question 12 12. What are 3 different weathering agents in nature? The three different agents in nature are.. b) Question 13 2pts 13. How are rock sediments eroded (moved) in nature? Rock sedinents are eroded by..15. How are rock sediments put together to form a sedimentary rock? To form a sedimentary rock they have to be put together by.... Question 16 16. What is the difference between moking a sedimentary rock and making a metamorphic rock?.