Hi there!

Following are the basic principles of life and life forms:

1. All living organisms are composed of cells. The cell is the basic unit of life.

2. Characters of living organisms are passed on from one generation to next through genes.

3. Living organisms change over time, i.e, they show evolution.

4. Living organisms maintain a stable internal environment (homeostasis).

5. Life forms follow the first law of thermodynamics which says "energy can neither be created nor be destroyed, it is only transformed from one form to another".

Thanks and Regards