Answer:
A
Explanation:
Constant speed (without change in direction) is not accelerating. If you are slowing down, speeding up, or changing direction, you are accelerating
Decomposing - When plants and animals die, they decompose. This process uses up oxygen and releases carbon dioxide. Rusting - This is also called oxidation. When things rust they use up oxygen.
Work is done. work=forcexdisplacement. the ice skater glides 2 meters (displacement), so yes.
Because it does not produce waste, thus it doesn't harm the environment. also renewable sources are infinite.