PDF chapter test TRY NOW
Fill in the blanks:
skeleton | two | thorax |
invertebrate | swan | body |
cockroach | breast | breastbone |
pneumatic | streamlined | forelimbs |
feathers | hind | snail |
1. The three parts of the cockroach include the head,and the abdomen.
2. Themuscles are responsible for flight.
3. In birds theare modified as wings.
4. The wings of the birds are equipped withthat play a role in flight.
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