A chemical change affects on the molecular level of matter, which makes it irreversible. Combustion is a pretty good exmple. Physical changes are reversible and dont alter the formula. Hope this helped!
Answer:
earth has a size of 6,371 km wich is greater than mars size 3,389.5 km
Explanation:
Plane is the right answer I thinkkkkk
A. A pacemaker
Hope this helps!
