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Embryos of different species look very similar, which shows that the organisms share a ancestor.
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The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?
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Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.
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Which polymers are most closely related? a. protein and nucleic acids b. cellulose and starch c. nucleic acids and starch d. nucleic acids and cellulose
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Atoms of which transition element have only 1 electron in the 4s sub-shell?
a) Cr b) Co c) Sc d...
a) Cr b) Co c) Sc d...
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