Free oxygen formed on earth after
(1) photosynthesis occurred
(2) much of the iron in...
Biology, 19.09.2019 00:30 angela6844
Free oxygen formed on earth after
(1) photosynthesis occurred
(2) much of the iron in the oceans had oxidized
(3) two phase changes of water
(4) surface temperatures vaporized all the water
Answers: 1
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Identify the terms using the following picture. principle of dominance item 1 can be described as the . item 2 can be described as the . the "p" represents from one parent.
Answers: 3
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How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.
Answers: 1
Biology, 22.06.2019 05:30
If a strand of dna has 35% thymine. what is the percentage of cytosine, adenine, guanine?
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