"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 3

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"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 3

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1. In order to control the population and improve the quality of the population, our country has determined the implementation of ___________ as a basic national policy.

2. The specific requirements for family planning in my country are___________.

3. Do you know what human production activities have caused damage to the environment? Try to summarize: such as deforestation___________, __________, __________, etc.

show doubt

1. What is the trend of population growth in my country?

2. What impact will human activities have on the environment?

The same human beings, modern humans have a far greater impact on the biosphere than ancient humans. Why is this?

How do human activities affect the environment?

How can we achieve harmonious coexistence between man and nature?

This is the main question explored in this chapter.

[Think about it and discuss it]

Earth - spaceship, people - passengers, is this metaphor appropriate?

Can it be as described in the textbook on the spaceship Earth? What else can you think of from this?

discuss:

1. From when to which year did my country’s natural population growth rate accelerate significantly? Please speculate on the reason.

2. After the mid-20th century, when did my country’s population growth rate basically stabilize at a low level? Why?

3. What is the actual situation of population growth where you live? Combined with the actual situation of local population growth, analyze the impact of population size on the environment, society and personal life.

The role of nature reserves has ten aspects:

1. Protect the natural environment and natural resources.

2. The role of scientific research.

3. Propaganda and education role.

4. Cultivation and breeding.

5. Ecological succession and environmental monitoring.

6. Biodiversity role.

7. Conserving water and purifying the air.

8. Rational utilization of natural resources.

9. The function of sightseeing.

10. The role of international cooperation and exchange.

practise:

1. Decide whether the following statements are correct. Draw “√” for correct answers and “×” for wrong answers.

(1) Resource and environmental problems are caused by excessive population growth. ( )

(2) The damage caused to the environment by human activities is irreparable. ( )

Pass detection

1. According to reports, the number of sandstorms in northern China is increasing, with 20 extremely large sandstorms occurring since the 1990s. The main cause of sandstorms is ( )

A. Overexploitation of the environment by humans B. Long-term invasion of the northern cold current C. Perennial drought, thousands of miles of bare land D. Too frequent crustal movements

2. Which of the following statements about the use of pesticides and fertilizers is incorrect ( )

A. Can cause water pollution B. Can cause soil pollution

C. Can cause air pollution D. Help protect the biosphere

3. When "red tide" occurs, water quality will seriously deteriorate, fish, shrimp and other aquatic life will die in large numbers, causing huge losses to the fishing and aquaculture industries. The cause of red tide is ( )

A. Sea water is polluted by chemical substances

B. Massive reproduction of animal and plant viruses

C. Sudden reproduction of marine plankton

D. A large amount of red soil flows into the ocean

4. Measures that are conducive to improving the quality of our country’s population are ( )

A Late childbearing B Late marriage C Fewer children D Eugenics

5. The key to improving the quality of our population is ( )

A. Late marriage b. Late childbearing C． Few students D. Eugenics

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Update Time: 2024-11-22

This template belongs to biology courseware People's Education Press seventh grade biology book volume 2 industry PPT template

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