Will mark brainliest the characteristics of two layers of earth’s crust are listed. layer a: consists of the lithosphere layer b: all living things live on this layer which statement is true? layer a is the crust and layer b is the mantle. layer a is the mantle and layer b is the crust. layer a is the outer core and layer b is the inner core. layer a is the inner core and layer b is the outer core.

Option B

Explanation:

The upper mantle along with the some portion of crust together makes the lithosphere.  

Lithosphere is bounded by the atmosphere and primarily consists of rock and plates. There are two types of oceanic lithosphere – a) Oceanic Lithosphere and b) Continental Lithosphere

The living organism live on the top most layer of earth i.e the crust which consist of geographical land forms and soil

Hence, option B is correct

answer and explanation;

volcanic rocks are igneous rocks which form from lava, molten rock which has been thrust out of a volcano onto the surface of a rocky body such as an asteroid, planet, or dwarf planet.  

plutonic rocks are igneous rocks which form from subterranean chambers of molten rock or magma. plutonic rocks make up the base of continental crust as well as oceanic crust. their slow rate of formation causes them to be coarse grained since there is plenty of time for large crystals to form before the magma solidifies into rock.

the textural difference is that plutonic rocks are more coarse grained than volcanic rocks. plutonic rocks are coarse grained while volcanic are fine grained ; glassey or fragmental. since fine and coarse are adjectives the decision as to whether a rock is fine or coarse grained is generally made on the bases of whether or not the individual crystals can be seen in most if the rock.