Biology Basics
Wildlife

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All living organisms are made up of a cell (unicellular) or cells (multicellular).
- Every living organism respires, excretes, reproduces, responds to external stimuli (action), and
has a definite lifespan.
- Multicellular organisms show growth by increasing number of cells and unicellular organisms by
increasing size.
- Autotrophs (chlorophyll present) photosynthesize (make their own food by water, O2 and
sunlight) while heterotrophs (chlorophyll absent, non-photosynthesizing) depend on other organisms.
- Living things are classified as moneras, protistans, fungi, plants and animals.
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