All animals _______ oxygen (O2) and _______ carbon dioxide (C02)
take in - release
What's this?
Exhale
When we exhale air, our diaphragms ________.
move up
____________ get oxygen through body surface.
worms
Insects have ________ system to respire.
tracheal
All animals __________.
respire
Which animals in the ocean have lungs?
Dolphins and whales
Humans use _________ to take oxygen from the environment.
lungs
What are these?
Ribs
Humans inhale air through _________ or _________.
nose or mouth
Fish use _____ to get oxygen from the water.
gills
What's this?
Inhale
What's this?
Diaphragm