homeostasis power point sf.pdf
homeostasis power point sf.pdf
homeostasis power point sf.pdf
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Amphibians and<br />
some reptiles have a<br />
3-chambered heart.<br />
Oxygenated and<br />
deoxygenated blood<br />
can mix.<br />
The blood flow to<br />
the lungs can be<br />
selectively turned<br />
off. This is done for<br />
poikilotherm heat<br />
control.