The answer I came up with is Echinoderms and Chordates.
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There are multiple energy source in the ocean. The one thats probably the most common one are Dams. Although Dams can cause some serious flooding. Another one is Tidal energy. Tidal energy is something that turns the energy of tides into energy through Kinetic motion.<span />
39%. Adenine would have the same percentage as Thymine, meaning it would he 32% A and T and then subtract that from 100 giving you 72 divide that by 2 and you get part Guanine and part Cytosine.
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One Idea was the appreciation that the age of the Earth was much greater than had hitherto for been imagined.
Answer:
Most of the predators were gone and suddenly niches were available so almost all the offspring were likely to survive and reproduce
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