2006-09-20 12:41:26 · 7 answers · asked by yyy_ans 1 in Science & Mathematics ➔ Biology
They are structured a lot like a sponge. Most of the lungs size is empty space for storing and exchanging gases. If you squished them into a solid ball, they would actually be quite small.
2006-09-20 12:43:40 · answer #1 · answered by juicy_wishun 6 · 1⤊ 0⤋
maybe because they are full of air and so your body doesnt get weighed down by them and thats all i can think of at the moment......
2006-09-20 19:50:37 · answer #2 · answered by chicky9244 2 · 0⤊ 0⤋
They are lungs...air
2006-09-20 19:42:58 · answer #3 · answered by nerveserver 5 · 0⤊ 0⤋
full of air pockets
2006-09-20 19:47:45 · answer #4 · answered by caz 1 · 0⤊ 0⤋
and full of air
2006-09-20 19:43:10 · answer #5 · answered by JimZ 7 · 0⤊ 0⤋
so they can carry more oxygen
2006-09-20 19:43:03 · answer #6 · answered by jack jack 7 · 0⤊ 0⤋
they are thin
2006-09-20 19:41:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋