Birds Birds
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The right lung contains 4 lobes while the left lung contains 3
the size of a footbal. if you were to unfold all of the air sacs inside of it (300) it could cover a football field.
1 out of 4
A 'C' surrounded by 4 dots with an 'F' attached to each one. The 4 'F's basically box the 'C' in. On the three sides of the 'F' that aren't attached to the C, there should be two crosses. I hope that makes sense : )
4
4
It is to increase the surface area of the lungs so that more oxyen can be taken in.
4 weeks. You could see 2 gestational sacs
Pb 4+ You can tell it is a 4 + charge because it has 4 chlorine attached to it and they are 1 - each, being a halogen.
Hand lung
The lung capacity vary on the person's age, gender, where he lives and more. For example, if he lives in a smoke-free area his lung capacity is probably more. The average lung capacity for a human is 4-6 liters of air and the average lung capacity for a 10-11 year old is around 4 liters.