Match each rock with the correct description. 1. cools quickly on the earth's surface intrusive igneous rock 2. cools slowly beneath the earth's surface metamorphic rock 3. formed from the remains of living organisms extrusive igneous rock 4. formed from pieces of other rocks cemented together clastic sedimentary rock 5. formed when dissolved minerals harden chemical sedimentary rock 6. formed from heat and pressure organic sedimentary rock

As from the option, rocks are divided into three types: Intrusive igneous rock, extrusive igneous rocks, sedimentary rocks and metamorphic rocks.

The answer of matching:

Intrusive igneous rocks- formed by lava from extrusive volcanism.

2.cools slowly beneath the earth's surface

extrusive igneous rock - formed by magma from intrusive volcansim.

1.cools quickly on the earth's surface

organic sedimentary rock - formed by compressed organic matters.

3.formed from the remains of living organisms

clastic sedimentary rock -formed by rocks compressed or cememted together.

4.formed from pieces of other rocks cemented together

chemical sedimentary rock- Formed when dissolved mineral gather and hardens

5.formed when dissolved minerals harden

metamorphic rock - Formed when parents rocks(other rock types, can be any) undergoes heat and pressure and change in texture and chemical components.

6.formed from heat and pressure  

Hope it helps!