installment 发表于 2025-3-23 09:57:10
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r large regions. Extensive regional changes in habitat variability could occur rapidly, indicating an impending ‘ecotone’ in time (threshold) over much of the region. Rapid, regional changes could produce significant negative impacts on biological diversity. The two types of change, boundary shiftsLEERY 发表于 2025-3-24 04:21:56
Alexander Hoffmann1)—a disassociation or alienation from one’s indigenous cultural resources through, among other things, urban migration, and a residual stigma against the indigenous lifestyle, metonymically linking traditional living with “back-wardness.” This chapter focuses on the ethnohistorical realities of . eMedicare 发表于 2025-3-24 07:34:06
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Alexander Hoffmannnt agricultural crops and orchards. Pesticides suitable for use in integrated pest management were urgently needed. A further aim of the group was therefore to test the side-effects of commonly used pesticides on the most important natural enemies and to provide an information ‘service’ to the other拥挤前 发表于 2025-3-24 17:27:24
Alexander Hoffmannon the assemblage. Given the presence of species interactions such as predation and competition, such additivity may not occur. The effect of a toxic substance might vary among species. Some toxic substances are, for instance, transferred through a food web without harming lower trophic levels, but,悲观 发表于 2025-3-24 22:14:36
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