What foods should you eat if you want to increase your intake of complex carbohydrates? Simple carbohydrates?

complex carbs you should eat more of whole grains

Complex carbohydrates:

Fruits- berries, apples

Vegetables- leafy greens, broccoli, carrots.

Whole grain- quinoa, wheat

Beans

For Simple carbohydrates, they are basically sugars and this includes: corn syrup, fruit juice, and any type of sugary foods.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.