Helllp please Explain how the electron energy levels proposed by Niels Bohr are similar to the rungs on a ladder. a) Explain how acid mine drainage can damage surrounding water supplies.

b) What can be done to minimize the environmental damage caused by mine drainage?

If it releases 5 tons a day and there are 7 days a take that answer and multiply by 5 percent (0.05) to find the amount released in one week. leave a comment if you need more .

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.