Which ingredient would cause gas? Why are some foods digestible and others aren’t?

“Sweet Indigestion” by Peggy Brickman Page 2
Here’s a list of what the girls had eaten so far:
• For breakfast—Cheerios with oat bran, a tall Latte with skim milk, and a PowerBar®.
• For lunch—Coke and a salad with lettuce, cabbage, tomato, shredded carrot, green peas, kidney beans,
and tuna fish.
Questions
1. Underline all foods containing carbohydrates.
2. Come up with a rule to help you identify foods containing carbohydrates.
3. How are carbohydrates made normally (i.e., what organism makes them)?
4. Which ingredient would cause gas? Why are some foods digestible and others aren’t?