Biology

2. Atoms
- The building blocks of matter.
- Group of atoms will form a
molecule.

3. Molecules
- Molecules group together to form
organelles.
- Molecules are bound together by
chemical bonds.

4. Cells
- The fundamental unit of life.

5. Tissues
- A group of similar cells will form
tissues.

6. Organs
- A group of tissues and other
structures that perform specific
functions.

7. Organ System
- An organ sytem is made up of
organs.

8. Organisms
- An organisms have severarl organs
that functions together.
- A living thing in a population is
called organism.

9. Population
- A number of particular species
living in a specific area.

10. Community
- A different organisms living in a
particular ecosystem. These groups
of organisms are called community.

11. Ecosystem
- It consists of various groups of
organisms and physical components
in a particular environment in which
particular organisms interact.

12. Biosphere
- The highest level of biological
hierarchy.
- It supports all ecosystems that
harbour organisms and the
environment where they live.