Answer: Every family needs certain things such as food, shelter, clothes, education and health services, etc. which are considered as the basic needs. All the family members are satisfied if all this things are provided to them. With the increase in the size of the family, the quantities of these things have to be increased.
huge ball of ionized gas (plasma) producing energy (light) by nuclear fusion. The visible surface of the sun (photosphere) is ~5700K. An object at this temperature emits most of its. energy as visible light
