Answer:
??i do know may i ask some questions?
Answer:
The two variables affecting the rate of diffusion are the concentration gradient and size of the molecule. Concentration gradient: The movement of the substance is generally along the concentration gradient of the solute and it moves from a region of its higher concentration to a region of its lower concentration.
Answer:
The atomic mass or atomic weight
Explanation:
Agents-wind, sun
cause - due to sun's heat it expands and during night it contract so after million years it turns to soil
Sorry, I need points to ask my questions...