To know where north east south and west are north is up east is right side south is down west is left side
I know that Boston is a main port of the American Economics, so they would want it for exporting and importing goods. I would assume that Philadelphia would have a related cause.
Answer:
Rotting of food
Explanation:
Enzymatic reaction causes molecules to change when rotting, therefore, rotting is a chemical reaction.
The most commonly used renewable energy source is natural gas.
Most people and industries today use natural gas as their main energy source because it is renewable, meaning that they cannot use it up given that it can be created again.
