1. ANIMAL CLASSIFICATION.
UNIT 2: ANIMALS
1. ANIMAL CLASSIFICATION.
- We can divide the animals into two groups: vertebrates and invertebrates.
- Vertebrates: are animals that have skeleton (bones or spine).
- Invertebrates: are animals that don't have skeleton (spine or bones).
- What is the skeleton? It's the group of bones.
- What is the skeleton for? To move, hold and protect the body.
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