arrogant 发表于 2025-3-23 11:56:44
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Essential Goals in World Politicsexual maturity. The number of offspring produced by a single female, although varying widely, may reach 200–300. The biology of . is characterized by two phenomena: parthenogenesis and polyploidy. The latter is especially interesting because it is rare among animals; both facts were established by timmunity 发表于 2025-3-23 19:35:47
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Paleobiology of the Precambrian: The Age of Blue-Green Algae, age of mammals,” “the age of angiosperms,” “the age of reptiles,” and so forth. In like manner and with equal force, the Precambrian Era, encompassing the earliest seven-eighths of geological history, can be termed “the age of blue-green algae”; microscopic cyanophytes formed the dominant componentsulcus 发表于 2025-3-24 04:58:36
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,The Phylogeny of Angiosperms—A Palynological Analysis,ic evolution are vividly exemplified in the multifarious manifestations of the living units, e.g., the species, each of which constitutes a compromise of diverse morphosystems at various levels of evolutionary advancement. In the fabric of morphosystems of any one species, the key role is played byeucalyptus 发表于 2025-3-24 16:00:55
Gene Flow in Seed Plants, decades. Economic considerations have stimulated studies of gene flow as a function of distance, breeding system, pollinating agent, and planting design in numerous domestic plants. Only during the past two decades have a large body of plant evolutionists become interested in information accruing f机制 发表于 2025-3-24 19:18:12
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