The growing size of the human population is a cause of concern for all people. The rate of birth and death in a given population will determine its size. Reproduction is the process by which organisms increase their population. The process of sexual maturation for reproduction is gradual and takes place while general body growth is still going on. Some degree of sexual maturation does not necessarily mean that the mind or body is ready for sexual acts or for having and bringing up children. Various contraceptive devices are being used by human beings to control the size of population.
Write two factors that determine the size of a population.

Explanation

To answer the question regarding the two factors that determine the size of a population, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Population Size**: The size of a population is influenced by various factors, but the most significant ones are the birth rate and the death rate.

2. **Identifying the Birth Rate**: The birth rate (represented as 'b') is the number of live births in a population per unit of time, usually expressed per thousand individuals. This indicates how many new individuals are being added to the population.

...