The first one because just think about how light oxygen or air is
Conduction is when an object allows electricity to pass through it. Think of something like a wire, coper, and steel. Good luck dude!
The answer is a “rises because it is less dense than cold air”
Answer:
Intrusive rocks are coarse-grained in texture and crystallise slowly from magma deep in the earth's crust. Extrusive rocks are fine-grained in texture and crystallise quickly from lava on or near the earth's surface. The mineralogy determines the type of rock.
