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Home Q & A Board Biology-Related Homework Help Zoology and Botany (Moderator: ehd123)
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LenChan64 LenChan64
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11 years ago
A. development of fertilization systems that required the organism to return to water
B. modifying gill structures to improve gas exchange with the atmosphere
C. development of xylem tissues for additional support
D. living in moist environments
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michelereemicheleree
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11 years ago
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