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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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Which of the following are causes of evolutionary change? 1)genetic drift 2) natural selection 3) gene flow 4)mutation
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Agriculture is changing the environment. with increased populations, there is a greater demand for food. which of the following is not an impact of farming? a) pesticide and fertilizer pollution b) sediment transport and deposition downstream c) increased water supply and flooding d) desertification and deforestation
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Define transcription. list the main steps involved in the process....
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