behaviors rely on prior practice or experience?

Learned behaviors

Explanation:

Learned behavior is where one develops from experience.

the answer is b: 1.4 km/hr

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.