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Biology, 21.06.2019 20:00
Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte
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Biology, 21.06.2019 20:30
Why is it important to reduce the number of chromosomes in half when forming gametes for sexual reproduction?
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Biology, 21.06.2019 23:30
Which level of consumer had access to the smallest apply of energy
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Biology, 22.06.2019 15:00
Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.
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When constructing dams, one should look for a stable bedrock base and a narrow gorge. true false...
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