Working of the Respiratory System
WS 4
Fill in the blanks to understand the working of the respiratory system.
in
The diaphragm
contracts and helps in
air.
Oxygen-rich air
enters the
cavity
the nasal cavity
moistens the air.
Answers
Answered by
2
Answer:
Volcanoes happen when magma rises to the surface of the earth, which causes bubbles of gas to appear in it. This gas can cause pressure to build up in the mountain, and it eventually explodes. When the magma bursts out of the earth, it is called lava.
Similar questions