This exchange process takes place in the aveolus (air sac) inside your lungs by diffusion.
it's from a different concentration gradient
the deoxygenated blood with carbon dioxide diffuse into a aveoli (which is in high concentration) and the aveoli release the oxygen into the blood stream (which is low concentration) therefore the blood will be oxygenated again
In cells are super much molecules, who take part of your body.
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Extrusive igneous rocks are rocks that explode out of a volcanic eruptions. From the following options, rhyolite an anestine are igneous rocks.
Thus, your answer is option A and C.
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Answer:
D . It enables organs such as the heart and stomach, to slide across cavity walls and each other without friction
Explanation:
Serous fluid is a yellow transparent liquid which is usually found in body cavities. The serous fluid serves as a lubricant to prevent internal organs such as the heart, lungs and so on, from being rubbed against each other.
English please i don't understand.