Answer:
Because when ice is made it traps air bubbles inside and that causes the ice to float.
Answer:
Moves down the concentration gradient
Explanation:
Since diffusion moves materials from an area of higher concentration to an area of lower concentration, it is described as moving solutes "down the concentration gradient" (compared with active transport, which often moves material from area of low concentration to area of higher concentration...
Cellular respiration (cells covert nutrients into atp)