Have you ever wondered how old a mountain is? Mountains, valleys and hills can form slowly, and some form very quickly.
© 10-Day Grade 5 STAAR Science Review Day 6 – Earth and Space Readiness TEKS 5.7B Supporting TEKS 5.8A, 5.8B, 4.7A, 4.8A, 4.8B, 4.8C, and 3.7B.
