How do the intake of nutrients and expenditure of energy relate to a metabolic level? "?

Different nutrients have different calorific content. Energy foods such as carbohydrates that have high calorific content are ideal to be taken in during exercises when the body requires more energy. It is during activities that your body’s metabolism increases and requires more calories for energy.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above