Answer:Resources
Step-by-step explanation:
The basic need of population is food, water and shelter. The resources can be defined as the needs which is required in order to live a life.
The needs of human beings are food. It is required to sustain life. Water is also one of the essential components which is required to survive.
Shelter is one of the basic needs of a population which is required for the survival.
Hence, food and water are resources for a population.