#7-Levels of cellular organization

First-CELL: Is the basic unit of life.
Second-TISSUE: A tissue is a group of cells working together.
Third-ORGAN: System of tissues that work together.
Fourth-ORGAN SYSTEM: A group of organs working together to perform an especific function.
Fifth-ORGANISM: Self-contained organism.
THERE ARE DIFFERENT TYPES OF TISSUES AND ORGANS DEPENDING ON WHAT ORGAN SYSTEM THEY CORRESPIND.

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#8-Microorganisms

Microorganisms are organisms that cannot be seen with the eye. We need a powerful microscope to see them! There are 5 types of microorganisms: FUNGI:  Fungi feed trough hypae. They eat almost everything that was once alive! BACTERIA:  Single-celled organisms. Can be found almost everywhere! VIRUSES:  They can only survive incide the cell of a living organism. When they enter they start to multiply. ALGAE:  Algae are very important microorganisms because they produce much of the earth's oxygen. PROTOZOA:  The word protozoa means little animal, because they search other microbes to eat them. They eat  mostly bacteria and other protozoa.
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