What we know about environmental pollution is the first lesson of Unit 4 of the first volume of Morality and Rule of Law in the fourth grade of primary school to make life greener. Reading the textbook carefully, it is not difficult to find that this unit inherits the understanding of lower grades, knows how to save various resources in daily life, has the consciousness of protecting the environment, learns the teaching goal of creating life, pays attention to the reuse of garbage, and further cultivates students' awareness of green life and green lifestyle.
I. Definition and concept of environmental pollution
Environmental pollution refers to the phenomenon that waste, sewage and waste gas produced by human activities are discharged into the natural environment, which exceeds its self-purification ability and leads to the decline of environmental quality. It seriously affects the ecological balance of the earth, human health and sustainable development.
Second, the main types of environmental pollution
Environmental pollution mainly includes air pollution, water pollution, soil pollution and noise pollution. Air pollution is mainly caused by industrial emissions, traffic exhaust and waste gas generated by coal burning activities, such as sulfur dioxide and nitrogen oxides. Water pollution refers to the direct or indirect discharge of agricultural, industrial and domestic sewage into water bodies, which leads to the deterioration of water quality.
Iii. Causes and effects of environmental pollution
The causes of environmental pollution are complex and diverse, including industrial development, energy consumption, transportation, agricultural production and other human activities. These activities release a lot of wastes and pollutants, causing serious damage to air, water and soil.
Environmental pollution has brought great influence on human health and ecosystem, such as air pollution leading to the increase of respiratory diseases, water pollution leading to the decrease of drinking water resources, soil pollution reducing the quality and yield of crops, and noise pollution causing psychological and physiological problems.
Iv. prevention and control of environmental pollution
In order to prevent and control environmental pollution, we should take a series of measures. First of all, we should strengthen environmental awareness and raise people's attention to environmental protection. Secondly, it is necessary to strengthen government supervision and management, formulate relevant laws and regulations, and strengthen law enforcement. In addition, it is necessary to promote green development, encourage the use of clean energy and reduce the generation and discharge of waste.
Verb (abbreviation of verb) summarizes the importance of environmental pollution and personal action.
Environmental pollution has a great influence on our life and health, so it is everyone's responsibility to protect the environment. We can start with small things in daily life, such as saving energy, reducing waste generation and using chemicals rationally. In addition, actively participating in environmental protection organizations and activities and publicizing environmental protection knowledge are also ways for us to contribute to environmental protection.