The existence of the creature is related to the environment, both direct and indirect, may be a positive or negative relationship is seen as not having any kind of creatures can live alone without dependence on the environment, so if the environment changes shall affect the living organisms in the environment, such as plant, animal life, and other low-floor life must have a dependency and relevant in relation to non-living environment, such as minerals. Sun. With the exchange of nutrients and energy to each other as the cycle progresses into the system under the balance of nature. Therefore, if the system is changed and the impact associated to the whole system and cause problems with the existence of other such creatures known as "ecological", which refers to the relationship between all living organisms with the environment existence.
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