ENVIRONMENTAL DEFINITION

There are different kinds of environmental or ecological, scientific ecology that brings together biological, biochemical geological, geographical ... because as he studies the relationship between living things and their environment, these knowledge are needed.

The fate of the environment begins to be kept in heart by humans. The harmful effects of pollution on the planet are increasingly feeling and impacts on the ecosystem and living beings are more important. We will see different kinds of definition related to the term environment. In the first place, we will see the definition of environmental subsequently the definition of environmental sustainability, then we take the definition of environmentalism, and so we speak of environmental stewardship definition and finally end with the environmental science definition.

THE DEFINITION OF ENVIRONMENTAL
The environment is constituted by all natural and artificial components that are around living beings. Some of these substances are essential for the survival of living beings. It can also be defined as the set of natural and cultural conditions that have direct effects on human beings and influence on the lives of human beings. Natural elements that make up the environment are water, air, atmosphere, soil, living things like animals, plants, human beings, but it must also be noted that the environment is also considered as the set of events that mark the life of man and his activities.

THE DEFINITION OF ENVIRONMENTAL SUSTAINABILITY
Known under the term "environmental sustainability" concept associated with sustainability indicates completion of an economic, environmental and social that can be maintained indefinitely in an environmentally and what surrounds it. In some cases, environmental sustainability is enhanced by the predispositions of natural resources in the consolidation of various industries such as food and agriculture in relation to the economic and health aspects of humanity. An environment is defined as sustainable when conditions are conducive to the survival of living beings.

THE ENVIRONMENTAL STEWARDSHIP DEFINITION
The environment stewardship definition is the management of the environment is to implement a program that describes the work to be done to protect and conserve the natural heritage value. The program includes the management plans should be concrete and immediately operational. To develop these plans, there should be an expert environmentalist and a logistics team for such a tough schedule in time and will be updated annually to each request of responsible management.

THE DEFINITION OF ENVIRONMENTALISM OR ECOLOGY
Ecology is a science that combines both geology, chemistry, physics, biology, and economics ... It is a complex science that studies the entire ecosystem components from air, soil, water and even the lives of living beings that thrive in these respective areas.

THE ENVIRONMENTAL SCIENCE DEFINITION
There is no denying that science in recent decades has grown considerably, technology and knowledge have made monumental booms in particular in the field of environment. Recently we have seen the emergence of a new science which is mainly devoted to the study of environmental behaviours such as ecology, which means that this area is very important in the life of the human being and survival even living. More with the advance of science, we can now access information that before now was not available for the environment and human impacts on the environment which are major sources of certain catches of consciousness in the human race. With the science of the environment, the war against the destruction and degradation of the latter has spread worldwide now issues a hole in the ozone layer, the impacts of global warming are part priorities. And to find solutions to these problems, scientists need more information about the environment which is favoured by environmental science.
The environment is all that surrounds all living beings enabling them to live, but because of some clumsiness and some unconsciousness, it is threatened by different types of pollution. This leads to adverse consequences for both the environment itself as living beings that live on planet earth.