I think it's the crust, but I'm not completely sure.
Rock cycle
Type your answer here... it was wet and the surface was covered with a thin layer of warm water.
No. Over 75% of earths surface is covered with these rocks, but it is only a thin layer. Actually, only 5% of earth's inner crust is made up of it.
Global Water
The Earth's thin surface layer is called the "crust." It is the outermost layer of the Earth, composed of solid rock and soil, and varies in thickness from about 5 kilometers (3 miles) beneath the oceans to up to 70 kilometers (43 miles) beneath mountain ranges. The crust is divided into tectonic plates that float on the semi-fluid upper mantle beneath it.
The exosphere is the outermost layer of Earth's atmosphere, extending up to 10,000 km above the surface. It is a very thin layer where the atmosphere transitions into space.
Ozone layer protects us. It is present as pool of ozone molecules.
it is the crust because the crust is thin and rigid with rock
Iron and magnesium rich rock.
The ozone Layer.BECAUSE IT IS RIGHT NEXT TO THE EXOSPHERE
crust
chromosphere.....is the thin layer above the photosphere