Grace is our sister(old/older/oldest)​

Explanation:

energy balance

Explanation:

The calories consumed in foods and beverages can be converted into energy (work and heat) and also can be stored as storage tissues (e.g., fat tissues). Energy balance refers to the balance of calories consumed compared to the calories burned through physical activity and metabolic activities (i.e., calories used in our daily energy requirements). Energy balance has important effects on metabolic activity, hormonal balance, and even mood. For example, a negative energy balance may lead to a decrease in metabolic activity, bone mass, testosterone level, less concentration, etc.