Birth rate is technically termed as :

1. Population density
2. Natality
3. Carrying capacity
4. Mortality

Which of the following is an exhaustible source of energy ?

1. Fossil fuels
2. Nuclear energy
3. Solar energy
4. Wind energy

Increasing population would need more and more energy. So various new sources of energy, like solar energy, tidal energy and wind energy are being used to cope with the rising energy demands. The figure given below shows a solar battery which can be used to produce energy for big buildings like schools, hospitals, etc.

Which of the following options holds true for solar energy ?

1. Solar energy is non-conventional and non-renewable.
2. Solar energy is conventional and renewable.
3. Solar energy is conventional and non-renewable.
4. Solar energy is non-conventional and renewable.

Assertion (A): Population density is the number of individuals in an area of 100 square kilometers per year.

Reason (R): Population density gives us an idea of all the living organisms of different species in a particular area every year.

1. Both A and R are True
2. Both A and R are False
3. A is True and R is False.
4. A is False and R is True.