trace-mineral
发表于 2025-3-21 17:25:42
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过滤
发表于 2025-3-21 21:14:02
https://doi.org/10.1007/978-3-319-76148-0the course of history, they have never done so in any essential way because they were not causes but consequences. Progress is the only factor which has determined the destiny of mankind and the real reformers are therefore the many unknown or known, but seldom talked about, toolmakers and inventors
软弱
发表于 2025-3-22 02:36:46
Charles Marques Lourenço M.D., Ph.D. of the majority of the human population. About 75 per cent of the world’s harvested area is sown with cereals, and wheat, maize, rice, barley, oats and rye account for almost 95 per cent of the total cereal crop. The evolution of the production of these main cereals is shown in Figure 2.1. The char
anesthesia
发表于 2025-3-22 06:35:42
https://doi.org/10.1007/978-3-030-84778-4mitted each year by the sun for the last 5000 million years is unimaginably large. Most of the sun’s radiation is lost in the infinite depths of the universe but an extremely small fraction of it is received by the earth, a small sphere, 150 million kilometres away in space. Some 40 per cent of the
担忧
发表于 2025-3-22 09:51:47
F. Brighina,B. Fierro,G. Cosentino of human, animal or plant life. Although the origin of pollution is generally to be found in human activities, it would still exist without man since nature itself continually contributes to it, e.g. by oil seepage from undersea wells or by more spectacular phenomena such as forest fires or volcani
fender
发表于 2025-3-22 13:30:58
Michel Lanteri-Minet,Anne Donnetcultural Age, which is to be expected since progress is always continuous, but by the year 1300 Northern Italy had become the centre of progress of the world and led Europe into the pre-industrial period which was to last until the middle of the seventeenth century. The typical citizens of the Europ
fender
发表于 2025-3-22 20:14:56
Sylvie Raoul,Konstantin V. Slavinccumulate accurate statistics on population. All through the earlier historical times records are very scarce and probably subject to large errors, and they are of course non-existent for prehistoric times. Attempting to make a reasonable guess is the best one can do in many cases. It is nevertheles
Acetaminophen
发表于 2025-3-23 01:18:11
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有常识
发表于 2025-3-23 04:45:09
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不近人情
发表于 2025-3-23 06:13:04
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