Nature

Nature is everything that was not made by man. It is the natural, physical or material world. Nature refers to the happenings of the physical world, and also to life in broad spectrum. Weather, organism , landforms, celestial bodies and much more are part of nature. Scientists study the way element of nature work. Things that have been made by people are said to be man made or called artifacts.

There are natural science that studies different parts of nature, for example the science of ecology is about plants and animals  as a whole, while biology studies every type of living thing.

               

                 Humans are a major model of nature, and are  the most widely studied natural inhabitants of our planet. Human interact with each other in their natural environment on a constant basis. Every part of nature - the whole lot from the air to the dirt on the ground - is mutually supporting.            

     

     Ecosystem 

An ecosystem is a community of plants, animals and smaller organism that live, feed, reproduce and interact in the same areas or environment. Some ecosystem are very large. For example many bird species in one place and feed completely different area. On the other hand, some ecosystem may be physically small, such as in a meadow at the edge of the forest, or in a coral reef in the ocean.
   
                   If you protect existing natural habitat, will have to maintain biodiversity ( biodiversity is the variety of life in all forms, level and combinations). Unfortunately, natural habitats and their ecosystems are more and more endangered because of the damaging environmental effects on growing human population everywhere.