Health, population, and environmental education are multi-dimensional subjects. all subjects related to human life and human health are related to them. The various subject matters are called aspects of health, population, and environment. The biological subject of them is illustrated and discussed below.
The biological aspect includes all kinds of living beings that include plants and animals. Different kinds of plants and animals are found in different climatic regions. Weather, geographical structure, etc determine the type of plants and animals in a specific place.