Question

How do the following animals breathe?
i. insects
n. whales iii. fish
iv. humans​

Answer 1

i=insects breathe through openings in the thorax and abdomen called spiracles.

ii = lungs

iii= gills

iv=lungs

Answer 2

• insects breathe through openings in the thorax and abdomen called spiracles.
• Whales and dolphins are mammals and breathe air into their lungs, just like we do.
• Fish breathe with their gills, and they need a constant supply of oxygen. Gills sit under the operculum. This is called the gill slit.
• When you inhale (breathe in), air enters your lungs and oxygen from the air moves from your lungs to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathe out). This process is called gas exchange and is essential to life.