CROSSWORD 3- Animals -ASSET Practice

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Across
  1. 3. fish use this to swim
  2. 4. group of animals that eat plants and animals
  3. 6. a vertebrate that has no legs and no wings , but use their strong muscles and scales to move
  4. 7. organ that helps in breathing in birds, reptiles and mammals
Down
  1. 1. group of invertebrates that use 6 legs to move, some may have wings too
  2. 2. group of animals that give birth to young ones
  3. 3. have webbed feet to swim
  4. 5. animals that gnaw or nibble at their food