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 Wysłany: Sob 9:22, 15 Sty 2011 Temat postu: The habits of wintering long-eared Hao _2369 |
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The habits of wintering long-eared Hao
Junior high school \paramecium living conditions of the scientific experiments. The extra-curricular group of biological experiment results more obvious, through the experiment,[link widoczny dla zalogowanych], students can deepen the understanding of the paramecium, the quality of students scientific experiments. while enhancing awareness of environmental protection purpose of the experiment 1 l . observe the spirit of different concentrations of cleaning solution on clean living conditions of Paramecium levels (ten per sample attack Paramecium View Village 2O) observation data obtained from the above Jie Ling Jie concentration curve of surviving individuals with Paramecium as follows: 2. inference Life used tableware tableware washing detergent 2. use of clean water, so as not to affect human health. 2 Experimental material Yuan appliances \Jie Ling, graduated cylinder,[link widoczny dla zalogowanych], beaker, large beakers, glass holding, 5 dish, dissecting microscope, and two counters. n 100mL distilled water to mix with a glass rod, then remove the spirit with a good cleaning solution, clean place 1000mL 10mL large beaker,[link widoczny dla zalogowanych], add distilled water to 1O00mL, stir well with a glass rod, as a backup mother liquor, the concentration of 1000 × 10. 2) have a good 1000 × 10 with mother liquor, the preparation of a 100 × 10,2 O × lO, 10 × 10 ~, 2 × 10 solutions were marked with 2, 3. 4. 5 tab. 3) Paramecium medium. 2, 3, 4, 5, were poured 10mL solution of 1 to 5, Petri dish, and then put a little of each dish in the cotton yarn. 4) to the culture dish 1,2 2O drops were added Paramecium medium (with Paramecium) after standing Srain were observed by two of 20 dissecting microscope with respect and record the living conditions of Paramecium. And then 3,4, S No. Repeat experimental operation dish. Jie Jie Ling 4 experimental phenomena paramecium concentration of individual survival curves. Curve we can see from the above: as a single cell paramecium living conditions of animals, cleaning the environment clean when concentrations of less than 2 × 10 spirit is called when no significant effect on their lives; when the environment clean Jieling concentration is higher than 2 × 10 When less than 10 × 10 is called. Adversely affect their lives, the phenomenon more obvious when the Jie Jie Ling {at concentrations higher than 20 × 10 called ~ 100 × 10, the make most of the paramecium to death. This research suggests that the living conditions of Paramecium influenced by Jie Ling Jie. Put cleaning utensils in life is a kind of spiritual pollution swept sell, but also affect people's health, so put soul washed clean utensils after use, be sure to rinse, to minimize harm to human body. Goodness (High School Tianjin, Tianjin 300161, China Yu Jie) Wang Xueli (twenty-eighth middle school in Tianjin, Tianjin 300011) Lu Jiang (River Road City, Taiwan-day law school days of Legal 300041) WANG Shu (Department of Middle School Tianjin, Tianjin 300021) (BF ) _} _t_t_t_t_t_t_t_ }_}_} ● _}_}_}_}_}_}_}_}_}_} _}_}_}_}_} sit sit sit _}_}_ _} }_}_}_}_}_}_}_}--_}_}_} long ears are the main prey, including osprey power in winter and fecundity were strong subadult (38.9) and adult ( 39.21 rodents, which is composed of vole populations age, consistent with seasonal changes that long-eared rodent predation on E is random can be deduced, long-eared parrot populations in the rodent predation on wintering period, effectively control of rodent habitat around and become an indispensable member of maintaining ecological balance. In recent years, the wintering habitat of individual long-eared parrot population is declining year by year the number from 1999 to 2000, during the winter, the peak in the number of statistics less than one hundred, the period from 2000 to 2001 from 2002 Winter Volume 3 37 analysis of the reasons fewer man-made interference with a great relationship,[link widoczny dla zalogowanych], including 直隶总督署 museums and urban reconstruction projects over the compound large. disturb the calm of the original, so that the birds are disturbed E; in recent years, great effort into developing anti-rat,[link widoczny dla zalogowanych], including moving, long-eared parrot Debu adequate food out of starvation caused by the individual; market rat poison is not standardized, resulting in long-eared Rat and parrot caught poisoning Qian secondary poisoning. In order to better maintain the natural ecological balance, and look forward to the general public in life to minimize human disturbance to the birds, reasonable protection, the use of beneficial birds for bird habitat and breeding to create a more good condition. (BF1 Biology Bulletin
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