You were recently on a school trip when something unusual happened. Write an email to a friend about what happened.
In your email you should:
• explain where you were going and why
• describe what happened
• say how you felt about what happened

i have to report this, it doesn't relate to biology

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.