束以马具
发表于 2025-3-23 13:21:49
that these herbivores offer regarding the structure of pre-human ecosystems, as well as their equivalents after faunistic turnover in human times, is sometimes neglected. The conclusion is not only a call for caution when applying certain actions, such as eradication, but also for recognition of ce
过剩
发表于 2025-3-23 14:18:42
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Compassionate
发表于 2025-3-23 18:58:00
tion events cause a sequential series of bottom-up and top-down effects that propagate throughout the food web. In the short-term, lizards shift from eating local prey (including terrestrial herbivores) to eating mostly marine detritivores, leading to increased herbivory and weakening the trophic ca
浪费物质
发表于 2025-3-24 02:03:49
defences as compared to closely related mainland species. We argue that biogeographical and climatic factors should also be considered to achieve a more complete understanding of insularity effects on the evolution of defence-related traits in plants.
beta-carotene
发表于 2025-3-24 05:38:45
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健谈
发表于 2025-3-24 07:21:48
Book 2008ropensities, education, research policy, and knowledge. Building and analyzing various tractable and flexible models within a compact whole, the book helps the reader to visualize economic life as an endless succession of physical ca- tal accumulation, human capital accumulation, innovation wrought
SOBER
发表于 2025-3-24 11:19:38
International Trade and Trade Theory,erns, and interactions of trade and economic growth. For instance, one may ask what are the long-term implications of sustained United States current account deficits and Japanese current account surpluses. Do the both economies lose or benefit from the unbalanced trade? If not, who benefits, and wh
excrete
发表于 2025-3-24 16:31:02
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FRAUD
发表于 2025-3-24 21:41:52
Trade with Imperfect Competition,l firm’s average cost at the prevailing output level. This situation will attract new entrants into the industry. As firms enter the monopolistically competitive market, a typical firm’s demand curve shifts. At a long-run equilibrium, a typical firm sets the profitmaximizing price equal to the avera
Offbeat
发表于 2025-3-25 01:59:23
Trade with Factor Mobility,e are concerned with capital and labor mobility. We will show that international capital or/and labor movement may invalidate some of the four core theorems developed in Chap. 2. Section 4.1 studies the validity of the four fundamental trade theorems, the factor equalization theorem, the Rybczynski