AN INSIGHT INTO NATURAL RESOURCES

About 75% of the things we consume, be it edible or for external use comes from Natural Resources. Like many other words with a lot of meaning, I find these meanings intriguing.
RESOURCE

•  "a source of supply or support, an available means."
• "a natural source of wealth or revenue."
• "a natural feature or phenomenon that enhances the quality of human life."
•  "a source of information or expertise."
• "a possibility of relief or recovery."
• "a means of spending ones leisure time."
• "ability to meet and handle a situation."

Resources could be man made or natural. The focus here is on Natural Resources, which are those that man has no hands in its existence. Natural Resources are of two kinds- Renewable and Non-renewable. Renewable Natural Resources are those that given time, will replenish or rejuvenate itself through a means of biological reproduction or other processes that occurs naturally. A definition most suitable for Renewable Natural Resources was given by Paul Alfred Weiss in 1962. He defined Renewable Natural Resources as, "the total range of living organisms providing man with food, fibers, drugs, etc...". This definition has a link with the several definitions given above. Examples of Renewable Natural resources are Forest, Rivers, Fish among others.
Non-renewable natural resources are those that do not replenish themselves given the normal human times scale. That is to say that such resources only rejuvenate over hundreds of years. Examples include coal, fossil fuel, crude oil among others.

The definitions given above implies that humans benefits from resources, either directly or indirectly. Directly, people can tap from natural resource and eat or sell to make money. Some people benefit from natural resources through leisure. People in the creative art industry go there to get creative and innovative. Yet still, some tap these natural resources as raw materials for manufacturing purposes.
Apart from individual who benefit from natural resources, some communities benefit from these resources culturally. The government also benefits from natural resources. Private individuals or companies , either local or foreign may also benefit from natural resources.

The benefits these groups or stakeholders, so to speak have are different, and as such, they have different values attached to these resources. Sometimes, often times, there are clashes between stakeholders or people who benefit from natural resources when it comes to management and usage of these.

What could be the main reasons behind these clashes, usually termed as CONFLICTS?