In the mitochondria, the powerhouse of the cell.
Answer:
These are things that won't be going away. Natural gasses and fossil fuels will likely run out someday or become much harder to find. When you use these sources of energy, they won't be going away and therefore will be sustainable because we can always continue using them.
Does that make sense?
Explanation:
C.90,000 mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
<span>Smallest to largest is--
millimeter (0.001m)
decimeter (0.01m)
centimeter(0.1m)
meter (1m)
dekameter (10m)
hectometer (100m)
kilometer (1000m)</span>
You and that friend would eventally start runing out of food, then its competition. You'll have to fight over it survival of the fitest