True: Muscles get longer and let you rest. We can say “MUSCLES RELAX”., Movement makes us healthy., Bones are strong and hard., Movement makes your heart and lungs work better., Animals with bones = Vertebrates, The hard outer layer is called an exoskeleton., There's 5 groups of vertebrates., False: Muscles get longer and let you rest. We can say “MUSCLES CONTRACT”., Legs are strong and hard., Animals with bones = Invertebrates, The hard outer layer is called an endoskeleton., There's 3 groups of vertebrates.,

SCIENCE HOMEWORK - WEEK 5

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