Answer:
air is drawn into the lungs
lungs expand
the muscles between the ribs contract to move the ribs up and down
air pressure in the chest cavity decreases
the diaphragm contracts and flattens
<span>tubulin, the microtubule protein</span>
First four are made of rock and rest are made of gases.
Atmospheres of all the planets are made of gases.
The best answer to the question stated above is <span>Building wooden furniture.
>Renewable Resource are </span><span>resource which are replaced naturally and can be used again.
</span> Examples:<span>oxygen, fresh water, solar energy, timber.</span><span>
></span><span>Intensive cultivation of farmland that exhausts soil nutrients. Is an example of human acts which led to the depletion of renewable resource.
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