Whenever Paramecium aurelia and Paramecium caudatum are placed into the same culture and given a constant
supply of food under constant conditions, P. aurelia will
always outcompete P. caudatum, which eventually dies
off. What factors prevents P. caudatum from surviving in
this situation?

i wish i could with all of them i can barley see the first one so here's the answer to the first one b

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.

b . streams flow into shallow areas.

f . movement of earth’s crust creates low areas that fill with water.