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|
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4
|
small blood vessels with thin walls, which carry blood between the arteries and veins
|
|
6
|
chemical reactions that release energy without oxygen
|
|
7
|
blood vessels that carry blood away from the heart
|
|
8
|
the right-hand side of the heart pumps blood to the lungs; the left-hand side pumps blood to the rest of the body
|
|
|
|
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|
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1
|
glucose from food reacts with oxygen to produce energy
|
|
2
|
air sacs in the lungs where gaseous exchange happens
|
|
3
|
breathing out air from the lungs
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|
5
|
changes to organisms which allow them to survive or to do their job
|
|
|
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