| pollution |
Generally, the presence of a substance in the environment that because of its chemical composition or quantity prevents the functioning of natural processes and produces undesirable environmental and health effects.Under the Clean Water Act, for example, the term has been defined as the man-made or man-induced alteration of the physical, biological, chemical, and radiological integrity of water and other media.
출처: www.waterquality.de/hydrobio.hw/PTERMS.HTM
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| pollination |
sexual reproduction in plants in which pollen is transferred from anther to stigma of either the same plant or another plant.
출처: www.pen.k12.va.us/VDOE/LFB/glossary/p.html
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| pollutant |
A substance that destroys the purity of air, water, or land.
출처: www.dfo-mpo.gc.ca/canwaters-eauxcan/bbb-lgb/librar...
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| pollutant |
any chemical substance from outside an ecosystem, whether natural or man-made, that impacts the biological processes in the ecosystem.
출처: www.ocean-institute.org/edu_programs/materials/P/G...
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| pollen |
Pollen, essentially, contains the male gametophytes (sex cells). It is produced in the anther. See also: pollination.
출처: www.earthandtable.com/glossary/plants/anatomy/infl...
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