Question

1. identify what percentage of earths crust is made up of sedimentary rock, and how are these rocks distributed on the land?

Explanation:

Sedimentary rocks make up about 5% of the Earth's crust by volume. However, on the land surface (exposed areas), sedimentary rocks cover approximately 75% of the continental landmasses. This is because sedimentary processes like erosion, deposition, and lithification are more active in surface environments, and over time, these rocks accumulate in layers in areas such as river valleys, coastal plains, and sedimentary basins.

Answer:

Sedimentary rocks make up about 5% of Earth’s crust by volume, but they cover approximately 75% of the continental land surface. These rocks are distributed in areas like river valleys, coastal plains, sedimentary basins, and regions with extensive erosion - deposition history, forming layered deposits over time.