In a single sentence, what is Natural Selection?

What is the "great pacific garbage patch"? a large area of marine debris concentrated by rotating ocean currents a large area around the pacific rim where debris collects from natural disasters such as tsunamis an area in the pacific ocean where trash is intentionally dumped due to lack of landfill availability a large trash dump located in hawaii

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Which statement describes the punctuated equilibrium theory?