Page 119 - Health, Population and Environment Education 10

breed. Suitable environment is required to conserve biodiversity. It also helps to provide
suitable condition for the survival of living beings. The necessities of conservation of
biodiversities are described below:

a. For the Existence of Living Beings

Many species of plants and animals are found on the earth. They differ according to the
geographical regions. Some of these species are used for breeding purpose to produce
better quality. These species are the property of the country. So, conservation is needed
even for future.

b. Sustainability of Resources
Human beings get their basic needs from biodiversity such as plants, trees, livestock,
medicinal herbs, etc. Life is impossible without these things. So, it is necessary to be
conserved. It helps to sustain the life of all living beings including the humans for future.
When these resources are conserved, future generation can use these resources for sustaining
their lives too.

c. Promotion of Natural Scene
The earth is the habitat of different types of birds, animals, vegetation and other creatures.
These creatures help to decorate nature. They attract the tourists that helps to earn foreign
currency. The economic development of the nation becomes easy through the natural
scene which is created by the presence of biodiversity. People also get employment from
it. So, we should make proper use of the resources and conserve them.

Fig: 5
Khaptad National Park Phewa Lake

d. For the Balance of Nature
Natural processes like water cycle, change of season, temperature variation, gaseous cycle,
food cycle, etc. continuously occur in nature. Biodiversity helps in maintaining a balance
between living and non-living things in the environment. They help in running the natural
processes automatically. So, biodiversity is necessary to be conserved to prevent adverse
effects in the natural processes.

e. Social and Environmental Development
Biodiversity is the main sources of food, medicines, raw materials etc. for industries and
factories. They are needed for human development. Biodiversity also provides the basic
GREEN Health, Population and Environment Education Book-10 119