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Environmental problems related to the pollution and protection of the natural resources; deterioration of the air quality; pollution of water and soil; hygiene and influence of chemical substances on living organisms; waste and the proper usage and disposal of the waste; resources of energy by their rational utilization; material cycles and energy in the nature are not unknown issues. All these concerns are taken into account within science lessons such as chemistry, geography, ecology, biology and physics at prim...

People are affected by the influence of various chemical substances in everyday life. How do chemical substances affect human body and which of them can actually threaten the health or damage it? The answers to these questions lead us to prepare the series of lectures and special seminars with practical samples of first aid course for the pupils of 6.-9. grade of elementary school and students of 8-year high school. Chemical substances are an important and inseparable part of our lives. They might have a negative ...