Mexican Bean, Rice and Quinoa Salad

Salad Ingredients:
¾ cup brown rice, cooked
½ cup quinoa, cooked
1 ½ cups black beans, cooked (if canned, use low-sodium and rinse
thoroughly)
1 cup peppers, chopped
1 cup tomatoes, chopped
1 cup cucumber, sliced
½ cup red onion, chopped
1 cup corn (niblets)

Dressing Ingredients:
6 tsp olive oil
¼ cup vinegar (apple cider)