1. What is the environment?

Environment refers to the space surrounding people, and the total of various natural and social factors that can affect human production, life and development.

2. What is China's environmental policy?
Comprehensive planning, rational layout, comprehensive utilization, turning harm into benefit, relying on the masses and everyone's efforts, protect the environment and benefit mankind.

3、What is the main symbol of a green school

Students should grasp the environmental protection content in various textbooks; Teachers and students have strong environmental awareness; Actively participate in social oriented environmental supervision, publicity and education activities; The campus is clean and beautiful.

4. When is World Environment Day?

The United Nations held the "United Nations Conference on the Human Environment" in Stockholm, the capital of Sweden, on June 5, 1972. Since then, June 5 of each year has been the World Environment Day. Other environmental related dates include World Forest Day on February 21, World Water Day on March 22, World Health Day on April 7, World Quit Smoking Day, World Earth Day on April 22, World No Tobacco Day on May 31, World Day to Combat Desertification and Drought on June 17, World Clean Day on September 14, and World Day to Protect the Ozone Layer on September 17.

5. What is sustainable development?

Development that meets the needs of contemporary people without harming the needs of future generations.

6. What is ecological balance?

The energy and recycling of the biological system are always going on. Although natural factors and human activities often bring various kinds of pollution to the ecosystem, a relatively stable balance can be maintained between producers, consumers and decomposers for a period of time, which is called ecological balance.

7. What is the food chain?

In the ecosystem, the chain relationship between various organisms connected by food relationship is called food chain.
Example: Microbes - zooplankton - fish - people are a food chain.

8. Is the earth short of water?

80% of the world's diseases are related to the lack of clean drinking water and minimum sanitation, and water will be as valuable as oil in the future.

9、What is red tide? What are the main causes of red tide? What is the harm of red tide?

Red tide refers to the phenomenon that some plankton in the sea water suddenly reproduce in a short time, causing anoxia in the water and killing fish. The main cause of red tide is the high content of organic matter, especially nitrogen and phosphorus in seawater. When the red tide occurs, the plankton will produce neurotoxin, which will cause a large number of fish deaths and threaten human beings through the food chain.

10. What are the common environmental pollution? What are the sources?

Sewage, waste gas, garbage, noise and light pollution are common urban pollution.
Source:
(1) Sewage: domestic wastewater, industrial wastewater, oil pollution, toxic substances and garbage.
(2) Air: industrial exhaust, automobile exhaust, kitchen fume, pesticides, new plastic products, freon in freezers, and various garbage and water channel gases.
(3) Noise: family noise, traffic noise, construction noise, social noise (peddling, firecrackers, store audio, etc.)
(4) Light: visible light, laser, infrared light, ultraviolet light, etc.
(5) Food: additives, artificial pigments, pesticides, etc.

11. Is there any legislation on environmental protection?

On December 6, 1989, China promulgated the Environmental Protection Law.

12. What is the greenhouse effect?
The carbon dioxide and water vapor in the air can absorb the heat lost on the ground, but some of the heat energy is transferred back to the ground, which has a thermal insulation effect on the ground. This effect, similar to the greenhouse effect, is called the greenhouse effect.

13. What is "white pollution"?

Foam tableware, plastic bags, etc. are difficult to degrade and differentiate, and toxic gas is generated when burning, which will damage the soil structure during landfill. So it is called "white pollution".

14. What is "acid rain"?

人為排放的二氧化硫或氮氧化物和汽車尾氣中的氮氧化物遇到水蒸氣會形成含高腐蝕性的酸性沉降物。稱為”酸雨”。

15. What is water eutrophication?

Eutrophication is a phenomenon in which plants, especially algae, multiply in large numbers and cause the decrease of dissolved oxygen in water bodies and the deterioration of water quality.

16. What is the role of the ozone layer? What factors caused the decrease?

The ozone layer can absorb most of the ultraviolet radiation from the sun and protect the life on the earth from its harm. Human activities lead to the reduction of the ozone layer, mainly because refrigerants, sprays, deodorants, etc. will destroy the concentration of ozone in the atmosphere.

17. What is radioactive contamination?

The nuclei of radioactive elements are released in the process of decay α、β、γ， The phenomenon of equal radiation is called radioactivity. Its radiation can kill organisms in the organism, causing cancer, leukemia, bone marrow disease, etc.

18. What is heavy metal pollution?

Metals with a specific gravity of more than 5 are weighed. Environmental pollution refers to heavy metals such as mercury, pickaxe, lead, chromium and arsenic with significant toxicity, as well as zinc, copper diamond, nickel and tin with certain toxicity. The pollution caused by it is called heavy metal pollution.
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