1. A - Working on your heart and lung's strength will improve stamina
2. C - Only activity there that wasnt straineous
3. D - Karate is an extremely focused activity and improves flexibility
2) determinó the report problem
600 calories, hope that helps
The brown stuff is called plaque. This forms on your teeth when you eat and its something you can't get rid of. There is tooth paste that can help maintain it.