Lecture : BIOSPHERE PARTS
Document Summary
The lithosphere is the terrestrial part of the biosphere. The deeper parts of the lithosphere, known as the lower mantle and the core, do not support life, other parts of lithosphere supports a variety of life from bacteria to large mammals and trees. The weathering of the lithosphere crust forms soil, which provides minerals and organic waste to support life. This solid, rocky crust is composed of a number of different rocks that have been grouped into three categories are metamorphic rocks, igneous rocks and sedimentary rocks. Metamorphic rocks metamorphic rocks are formed by heat and pressure from pre-existing rocks. Igneous rocks igneous rocks are formed by the cooling of hot molten rock also known as magma. When the hot magma cools it begins to harden meaning once it had fully cooled it create what is known to be an igneous rock. Sedimentary rocks sedimentary rocks are formed from pre-existing rocks.
