Fossil evidence because these changed occur over long time periods (millions of years).
Explanation:
GILLS – the gills of a skate are on the underside of their body. Whereas on a shark they're found either side of the head
B. false, this is because a few plants do not photosynthesize and instead get their nutrients/ food from another organism (they are parasitic)
Molecules only move across the blood - air barrier if there is a difference in concentration.
So I think that nothing would happen!
So?? what?
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