Yes, because you are moving your knee so you are moving your muscle (making exercise).
yea
No.
no being fat get rid of them
Eating any foods in huge quality will help to get rid of fat loss. Sugary foods are particularly good for this.
I'm not an expert, but I think you can get special programs to help you.
Yes. Massage the knee can definitely help the situation. Straighten the leg and massage the knee just above the kneecap. Sometimes the knee is inflamed and icing the knee down during rest times can also be very helpful.
No food burns belly fat. Belly fat is burned by, having an active life and exercising for 30 minutes a day 7 days a week. That should help burn belly fat.
it will help but should be balanced out with a health diet and other exercise
Cardiovascular exercise is the only way to reduce fat. You can't "spot remove" fat on the hips, calves, butt, etc. Losing weight through cardio and weight training exercises that focus on the calves will give them a lot more definition though. ~ T
Jogging is faster,climbing stairs is great for the legs!
sit-ups
You should do more cardio and drink lots of water, basic exercises will help burn off excess fat.