A/a physical change is when an object goes through a natural change such as weather etc.
B/ the different is that 1) chemical change is more quick to change rather than physical (ex: I’d there is rocks flying around and is wearing down another rock it would take longer rather than acid)
Answer: D
Explanation: You move the decimal back 4 times.
Answer:
I don't know because I don't know about chemistry
Answer =Tsunamis because they flood places and areas