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الإعلانات

الاثنين, شباط (فبراير) 17, 2020 - 13:54
Pollution & pollutants, physical: particles, gases, ozone layer, radiations and noise chemical pollution: heavy metals, oil, pesticides, sewage; organic and biological pollution; hydro-...
Ecological introduction, species and population characteristics, and ecological equilibrium. Reasons behind species extinction, study of animals in Saudi Arabia (terrestrial and aquatic)....
Characteristics of aquatic and terrestrial animal populations (natality rate, density, age distribution). Population growth, effect of abiotic factors on population growth (aquatic &...
There is growing concern over the potential detrimental impact of ionizing radiation on natural biota. The mechanistic cause-and-effect impact of ionizing radiation has yet to be...