Nutrition, reproduction , growth , movement , sensitivity , excretion and respiration.

Viruses are parasites which means they can only survive inside other living organisms cell.

Bacteria are single-celled that are very small .Bacteria that make up sick are called pathogenic bacteria and cause diseases at plant , people and animals.

At colder temperature decomposing will be less active and if the temperature raise the decomposers become more active and the rate increases and decay stop.

Fungi are living organisms that are classified to their own kingdom .

Algae are living organisms , are found all over the world , can be green , blue , red and brown. They are to big to (200 feet).

Decomposition is the break down of dead matter.

Micro-organisms is a living organisms so small that we can see only with microscope.

Spores are reproductive cells capable of developing into a new individual without combining with another reproductive cell.

They reproduce through numerous spores rather than pollen , fruits or seeds.

They are important because they play an important role at the fertility of soil .

If we get in touch with harmful bacteria they reproduce in our body and make us sick.