Three students are testing which method can melt an ice cube in a plastic bag the fastest.
The first student holds her ice cube in her hands. The second student sits on his ice cube. The third student leaves her ice cube on
her desk
What is the variable, or the factor that changes in this experiment?
A. the type of plastic bag
B. the method used to melt the ice
c. the number of ice cubes
D.
the starting temperature of the ice

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

what are the options? add them, then i will be glad to .

i am sorry but i need more information and a picture.

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.