Ecosystem services are those natural processes that directly or indirectly benefits humans and increase social welfare. Natural environment can benefit the humans in a direct or in an indirect way. Examples of ecosystems are forest ecosystems, grassland ecosystems and aquatic ecosystems. There are mainly three types of ecosystem services: 1. Provisioning services that provide water, food and medicine. 2. Regulating services which control climate and diseases. 3. Cultural services that influence our beliefs and traditions.

We would like to work on the provisioning services that provide water, food and medicine because these are necessary for the human life. It these services are not available then life will not be there on earth. Without these services we cannot expect human existence. We should work on these services to ensure human life existence. Regulating and cultural services are also very important for a human existence and a civilized society and cultural climate. These services have significance to provide humans benefits but the most important among these are provisioning services which we should consider the most important.

Simplified environment process means studuy of environmental impacts of activities and businesses of very low impact or non-significant impacts. It may have some other studies. It is a description of the project, will a diagnosis and assessment of environmental impacts, mitigating measures and environmental control.

Natural resources accounting process: It is a process which includes accounting system that deals with stocks and stock exchanges of natural assests, water and land with their terrestrial and aquatic ecosystems. It is the process of calculating the total stocks and flows of natural resources and services in an ecosystem. Accounting for these goods may occur in physical or monetary terms.