Define $\text{Nutrition}$. Why is nutrition necessary for an organism?

(N/A) $\text{Nutrition}$ is defined as the process of intake of nutrients (such as carbohydrates, fats, proteins, minerals, vitamins, and water) by an organism and the utilization of these nutrients by the organism to perform various life processes.
Nutrition is necessary for an organism because:
$1$. It provides energy required for various metabolic activities.
$2$. It provides materials for the growth and repair of damaged tissues.
$3$. It helps in maintaining the body's internal environment and overall health.
Therefore, the correct answer is that nutrition is essential for all these functions.