PLEASE HELP!! Some single-celled organisms, such as Paramecium, can be destroyed if osmosis is not regulated. These organisms maintain homeostasis by using to expel extra water. *
Endocytosis
Contractile Vacuoles
Exocytosis
Sodium-Potassium Pump

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

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.