"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 5

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"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 5

Human beings are also living creatures, and their impact on the biosphere far exceeds that of other living creatures. Why is this? The same is true for humans. Modern humans have a far greater impact on the biosphere than ancient humans. Why is this? What impact do human activities have on the environment? How can we achieve harmonious coexistence between man and nature? This is the question to be explored in this chapter.

Think about it and discuss it:

Some people compare the earth to a "spaceship" in which humans are the passengers. Do you think this metaphor is appropriate? When taking a ship, when you feel that the air in the cabin is dirty, you can go to the deck to breathe fresh air; the garbage on the ship can be sent to a special place for disposal after the ship docks; the number of passengers on the ship will not increase to the point of overcrowding... Is this also true on the "spaceship" Earth? What else can you think of from this?

Very reasonable and appropriate. However, the "spaceship" of the Earth is different in that it has more and more passengers, cannot dock to unload garbage, and cannot be updated due to air pollution. Description----The impact of population growth and human activities on the environment.

discuss:

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

Answer: From 1949 to 1989, my country's population growth accelerated significantly. The reason is: people's living standards continue to improve, and medical and health conditions continue to improve.

Question 1: What impact will deforestation have on the local natural environment? What impact does it have on the biosphere?

Oasis reduced to desert

Massive soil and water loss

Severe drought and water shortage

Floods occur frequently

Species are becoming extinct

Greenhouse effect intensifies

Question 2: Some factories discharge large amounts of smoke directly into the atmosphere. What impact will this have on the environment?

1. Harm to human health: The main manifestation is respiratory diseases.

2. The carbon-oxygen balance is destroyed, resulting in a greenhouse effect.

3. Sulfur dioxide produces acid rain and seriously damages vegetation.

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.

Impact of biological invasion on the environment

1. Destroy the ecological environment and cause ecological pollution.

2. Loss of biological diversity.

3. Ecological disasters occur frequently and cause serious losses.

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. ( )

2. Someone said, "The food problem is one of the major problems facing the world today. If the food problem is solved, population growth can be unrestricted." What do you think of this statement?

Answer: Unreasonable. The food problem is indeed a major problem facing the world today, but it is only one of many factors restricting population growth. .

What are the four major problems facing the world today?

Population, food, environment, energy

3. What are some examples of environmental damage where you live? How do you think these status quos should be changed?

Disposable chopsticks are everywhere, and trees have fallen down. You can bring your own tableware and try not to use disposable products; there are more and more private cars emitting more exhaust gas, and the air we breathe is getting worse and worse. You can take some measures Use public transportation facilities or walk and cycle; discard garbage randomly and pollute the environment and waste it. You can sort the garbage and turn usable waste into treasure; water resources are in short supply and wasted. Save water and recycle water, such as for laundry and vegetables. Water flushes toilets and reuses gray water. etc.

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"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 4:

"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 4 Think about it and discuss it: Some people compare the earth to a spaceship, in which humans are the passengers. Do you think this metaphor is appropriate? When you're on a ship and you feel like the cabin...

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

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

"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 2:

"Analysis of the Impact of Human Activities on the Ecological Environment" Impact of Human Activities on the Biosphere PPT Courseware 2 Orangutans' Dependence on the Ecological Environment Orangutans are very sensitive to the logging industry. When logging activities become more and more intensive, they will disappear completely. As more and more forests...

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Update Time: 2024-07-05

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