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1. Protists

Examples of protists include protozoa and some primitive algae.

2. Invertebrates

Invertebrates are animals that do not possess a backbone or spine.

3. Plants

Plants are Autotrophic, they prepare their food on their own.

Animals are heterotropic, they obtain food directly/indirectly from plants.

4. Species

A group of closely related organisms capable of interbreeding and producing fertile offspring.