Answer:
To moisten and to protect the airway from stuff like unknown pathogens and infection
Explanation:
The Trachea also known as the windpipe has tons of 'little hairs' called cilia in the epithelium that protect the throat. When someone smokes or breathes in gases it is destroyed and exposes the trachea. But thats another story. :)
Thats false, plants and animals need a lot of sun and WATER to survive so a tropical climate is better
Answer:
Vein
Explanation:
Veins are the ones that keep you alive because blood goes inside the vein
Mountains is going to be windy an d cold
plants=semi warm
animals sorry idk