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What is an animal (Functions of animals (reproduction (sexual reproduction…

- - - - it gets food by eating other organisms
  - - - joining of two sex cells
        
        fertilization
        
        joining of an egg cell and a sperm
    - - a single organism produces a new organism identical to itself
- - - - vertebrates
        
        with a backbone
      - invertebrates
        
        without a backbone
- - - - a cell
    - - cell
        
        tissue
        
        organ
        
        system
    - - obtaining food and oxygen
        
        keeping conditions stale
        
        movement
        
        reproduction
    - - eat plants and animals
    - - meeting the basic needs of survival
    - - an animal with a backbone
    - - phylum
    - - mammals