I think it is fossil fuel .. might be wrong tho
Answer:
Tectonic Plates
Explanation:
Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere. The plates are around 100 km (62 mi) thick and consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium).
The mitochondrion (plural mitochondria) is a organelle found in most eukaryotic cells.
Cardiac Muscle, reason its called Cardiac attack when you have that sort of " Heart Attack "
