The sahara made migrating rough because it was a desert but it was easier to pass through rather than south afria going through jungles
"Gulf of Finland" <span>is the name of the gulf which lies between the Scandinavian Peninsula and Finland
Hope this helps!</span>
When something happens, energy is changed from one form into another. When you climb stairs, chemical energy in your food is changed into kinetic energy by your muscles, and into potential energy as you raise your body against gravity. The amount of energy transferred is measured in JOULES.
