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The excessive chemicalization of agriculture causes some disturbances in the biological equilibrium of the soil media. The organisms useful for the soil are dying and their place is occupied by the toxinogenic fungi. The products of their metabolism are mycotoxins characterized by bactericidal, fungicidal and carcinogenic effects.
The authors have summed up the first experiments of the Cracow secondary schools in teaching environmental protection. Teachers have a lot of trouble e.g. with getting good educational aids, and therefore the traditional methods of teaching still dominate at schools.
The article describes a course of the protesting action against the plan of building a radioactive cemetery at Międzyrzecze. This cemetery was to be organized in the old defence fortifications which are the habitat of a rare species of bats.
Legal rules, organization and practice of the protection and preservation of the monuments in Holland are presented. The activities of the Menno von Coehorn's Foundation which takes care of the monuments of the military architecture are given as an example.
Filling up a ravine with the earth from the adjoining arable lands can be recognized as an illigal transformation of the surface of the earth and the sculpture of the ground. It refers specially to ravines covered with freees and shrubs.
Is the so-called silence of the Universe a result of the existence of a barrier for the quantity of energy which can be processed by the civilization without threatening its own being? The definition of such a barrier would be possible by means of complex tests on the physical aspects of processing energy by the civilization.
Although industrial pollution of the atmosphere is the main threat of the forests, we should not ignores the mistakes with have been made up till now by the forest administration. The author is of an opinion that e.g. both the forest theory and practice have changed the concept of the forest as an ecosystem in favour of the forest regarded as a timber factory.
A dangerous poisoner of the air in Wrocław is the local Plant of the Inorganic Industry. The Plant has already got under control the organized emission of fluorine, but some sources of an unorganized emission are still existing.
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