Would you expect an ecosystem that had not been disturbed for 20 years to remain the same? Explain why or why not.

your answer is going to be physical weathering

here is the answer

water, ice, acids, salts, plants, animals, and changes in temperature are all agents of weathering. weathering is the breaking down or dissolving of rocks and minerals on earths surface. once a rock has been broken down, a process called erosion transports the bits of rock and minerals away.