The following points highlight the four main factors that influence the life of an organism. The factors are: 1. Temperature 2. Water 3. Light 4. Soil. Factor # 1. Temperature: It is the most ecologically significant environ mental factor. It varies seasonally. Thus, decreases progressively from the equator towards the poles and from plains to the mountain tops. It ranges [...]
In this article we will discuss about:- 1. Concept of the Origin of Life 2. Approaches of the Origin of Life 3. Theories. Concept of the Origin of Life: The origin of life on earth is one of the most elusive and oldest problems of biology. For about one half of the long span of earth's history, the earth was [...]
Here is an essay on life. 'Life' is abstract. It has, perhaps, no objective reality apart from the living body and, hence, evades definition. Aristotle (304-322 B.C.), the ancient Greek naturalist and father of modern biology (Fig. 2), recognised plants and animals as living objects, but failed to put forward a precise definition of life. Though life has not been [...]