1) Name the breathing structure of these two living things.
.....Animal Y: Lungs
.....Animal X: Trachea structure
2) Name one living thing that has the same breathing structure as animals X and Y respectively.
.....Animal X: Dog (or any relevant answer)
.....Animal Y: Grasshopper (or any relevant answer)
3) What is the breathing structure of a crab?
.....Book Lungs
4) Exhaled air contains more gas P. What is gas P?
.....Carbon dioxide.
