According to my college Biology professor, birds have the most efficient lungs of all LAND vertebrates.
They will either die if they get past the esophagus, or you will choke if they get attached in your throat or if they make their way into your lungs.
What materials make up the endoskeletons of most vertebrates
The engine was cleaner and more efficient.
To make the lungs work and if our lungs didn't work then we couldn't breathe.
Smoking can make your lungs very weak also drinking and other drugs...
No asthma makes your lungs weaker-the worse your asthma the weaker your lungs.
Hair and milk.
First, our spines make us vertebrates. Giving live birth, and female milk glands are two features that make us mammals.
of all the living things in the world 96% are invertebrates
Bigger lungs, more air.
To make a sentence more efficient, focus on conveying the message clearly and concisely without unnecessary words. Omitting adverbs, replacing passive voice with active voice, and avoiding redundant phrases can all help make a sentence more efficient.
The cardiac muscle is arranged spirally around the heart to make it more efficient.