The change in distance is 30 because if you subtract both number you'll get 30
Oml... Its physical... Unless if your turning that wheat into bread by using fire it would be chemical.
Yeeeeeeeetus
Answer:
there are no pictures attached.
There are 120 seconds in two minutes, so to find the answer, you multiply 20 x 120 to get 2400 meters.
So i believe is exercise:)
