The main producer of sediment is a) ice wedging. c) chemical weathering. b) erosion. d) mechanical weathering.

D

Explanation:

Mechanical weathering mechanically breaks apart rocks without changing their chemical composition. Mechanical weathering of rocks increasingly creates smaller rock particles that can ultimately be carried by running water as sediments. The sediments are later deposited when the running water becomes relatively still such as in water bodies – lakes and oceans.

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

1.solid

2.carbon dioxide

3.helium