Microorganisma as a living things

http://www.youtube.com/watch?feature=player_detailpage&v=gEwzDydciWc
All microorganisms are living things, or organisms.  Microorganisms may be single-celled, any living thing that has only one cell – the smallest unit of life.  Some microorganisms are multicellular, having more than one cell.  They require food, air, water, ways to dispose of waste and an environment in which they can live.  Some microorganisms are producers, living things that make their own food from simple substances using sunlight, as plants do.  Some microorganisms eat other organisms to get their food.  Most microorganisms do not cause  disease and many are helpful.  There are many different kinds of microorganisms.  Scientists serve and classify microorganisms just as they do plants and animals.  These classifications are determined by the microorganism’s shape, structure, how it gets food, where it lives and how it moves.

Microorganisms are living things because they, 
a. Growth                - Microorganism will grown in terms of size and number.
b. Need to eat food - It need food for energy.
c. Move                  - It may not stay at the same place all the time.
d. Reproduce          - It will duplicate or birth a next generation.
e. Excrete waste      - It eliminated the waste products which is products of metabolism and other non-useful materials.
f. Breathe                - It require oxygen to release energy via respiration.