Tagged: green plants

March 22, 2015

The properties, source and cycle of oxygen gas

The atmosphere contains oxygen gas that necessary for the respiration process, It is a mixture of gases surrounding the Earth, It is attracted to Earth by gravity, It protects the Earth by absorbing ultraviolet...

The Living Organisms

July 9, 2014

Type of living organisms according to their feeding

The living organisms Living organisms are classified according to their feeding into the producers, the consumers, and the decomposers. The producers The producers are the living organisms that can make their own food by...