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so the air can go thought it easily
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∙ 10y ago
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Why must air sacs have thin walls?
The air sac must have thin walls so that air passes easily through it.
What layer of the atmosphere is the air very thin and has little moisture?
The thermoshere is the layer that has very thin air and has little moisture. That is to answer your question!
What is the most efficient way to increase a radiator's efficiency?
Making the walls of the tubes as thin as possible improves efficiency by reducing the dist heat must travel through metal to air.
Why is it easy for gases to pass between air sacs and blood?
because the walls are thin
Is the air in the thermosphere thin or thick?
The air in the thermosphere is very thin because of it's high altitude.
For air sacs to do their job their walls must be kept?
lubricated
What is a characteristic of the thermosphere?
the air is very thin in the Thermosphere
Why do lungs have thin permeable walls?
diffusion of gases (oxygen and carbon dioxide) to & from air in lungs and capillaries in alveoli
What is the air like at the top of a mountain?
The air is usually very thin at the top of a mountain.
What does it mean when a tear drop drops out of thin air on your cheek?
Their must be a very unhappy bird flying past. Just kidding, the definition if 'thin air' implies it came into existence from nowhere, which is a bit improbable. My explanation is that it was a drop of water (rain, vapour, roof etc)
Why are planes limited in altitude?
Because the higher you go the more thin air. So the engines have to work very hard to suck air in their engines dues to thin air and less air.
What is a layer of very thin air and very cold temperature above the stratosphere?
mesosphere
