Mass extinction refers to the procedure in which a huge number of species gets extinct suddenly.
The following are the correct matches of the events taken place in the mentioned time period:
1. Cretaceous-Tertiary: The mass extinction of dinosaurs took place.
2. End-Triassic: Possibly resulting due to massive rifting of the surface of the Earth.
3. Permian-Triassic: It is considered the worst mass extinction in the history of the Earth.
4. Late Devonian: It is possibly a result of the growth of forest on the land surface of the Earth.
5. Ordovician-Silurian: The earliest mass extinction took place at this time.
Mainly to control the movement of substances in and out of the cell. It’s selective so it only allows certain molecules inside such as small molecules like water.
