Biology 8th Grade Environmental Pollution and Protection Summary Urgent 5

Ecological balance. The number and proportion of various organisms in the ecosystem are always maintained in a relatively stable state, and this phenomenon is called ecological balance.

8. China's wildlife resources.

China's gymnosperm resources occupy the first place in the world.

Giant pandas, golden snub-nosed monkeys, white-sided dolphins, Chinese alligators, musk deer, silver fir, golden pine, dove tree and other rare animals and plants unique to China.

1. Many wild animals and plants can be used as medicinal herbs.

2. It can provide a large number of industrial raw materials.

3. Provide food for human beings.

4. It has important scientific research value.

9. Environmental pollution.

Air pollution, water pollution, solid waste pollution, soil pollution, noise pollution.

10. Environmental protection (basic national policy).

In order to protect the natural environment and wildlife resources, China has successively established hundreds of nature reserves, such as Sichuan Wolong, Wanglang and Jiuzhaigou Nature Reserves (giant pandas, golden monkeys), Guangxi Huaping Nature Reserve (Yinshan). For enterprises that seriously pollute the environment, waste resources, and affect the normal life of nearby residents, measures such as time-limited treatment or suspension of production shall be implemented. Start with me to establish environmental awareness and cultivate a love for the environment.

I wish you every success in your exams.

3. Animal movement (1) Composition and function of the locomotor system The locomotor system is composed of bones and muscles. Skeletal muscles are made up of tendons and abdominals. Bone Lever Joints Pivot Effect Skeletal Muscle Connection and Dynamic Action (2) Coordination and cooperation of bones, joints and muscles to complete various actions When skeletal muscles are contracted by the excitation of nerves, they will pull the bones to move around the joints, so the body will move.

Schematic diagram of the correct connection of bones, joints and muscles in the process of elbow flexion and elbow extension When elbow flexion: the biceps contract and the triceps relaxes. When the elbow is extended:

The triceps muscle contracted, and the biceps muscle relaxed. (3) Joints The figure on the right is a mammalian joint pattern diagram, please answer the following questions according to the diagram: (1) Write the name of the code joint head joint capsule joint cavity joint socket articular cartilage (2) within

Synovial fluid function is

The effect of friction reduction is to cushion vibrations.

(3) When playing sports, it is easy to dislocate if it is too vigorous. Dislocation is the prolapse of the structural joint head from the structural socket. and together to form the articular surface.

Chapter 3 The Role of Animals in the Biosphere 1. The Role of Animals in Ecological Balance: (1) Ecological Balance: It refers to the fact that the number and proportion of various organisms in the ecosystem are always maintained in a relatively stable state.

2) There is an interdependent and mutually restrictive relationship between various organisms in the food chain and food web, and animals are important components in the food chain and food web, which play an important role in maintaining ecological balance. (Therefore, animals cannot be killed indiscriminately) 2. Animals can promote the material cycle of the ecosystem.

Search for the courseware of the high school education version.

Earth, she is the mother of mankind, she is the origin of human life, she selflessly nurtures us so that we can be.

Living on this blessed planet, the earth has an inexhaustible supply of resources.

Looking at the earth from afar from the vastness of space, the earth is like a glass ball that is white and blue. The blue sea, the brown land, the green forests and grasslands, the silver lines of the glittering rivers, and the clouds float in the sky, flowing out a beautiful and soft picture. The beauty of the earth is not only that it has this rare blue, but also that it has given birth to green life for decades and billions of years, and that the earth has so far.

The Earth is the only planet we have found to have life, the Earth is lonely because of life, and the Earth is beautiful because of life.

However, with the unprecedented development of modern human science, technology and economy, the earth - the home we rely on for survival, has also suffered unprecedented damage in the process of human conquest and transformation of the natural environment, the yellow sand has replaced the reckless forest sea, the rivers that once gave birth to the splendid ancient culture have often become dry riverbeds, the original magnificent scenery has been annihilated into wilderness, and the water table has fallen, the climate has warmed, the glaciers have melted, the atmosphere has polluted, the ozone layer has caved, the destructive storms have increased, the sea level has risen, and the species of organisms have decreased sharply...... After a long period of plundering resources, the earth and its inhabitants seem to enter a high-risk area, where global warming, climate and pollution of soil, rivers and oceans threaten people everywhere, and the survival of natural resources such as water and forests is not telling? Huge amounts of garbage are being generated, and the alarm bell of environmental degradation has long been sounded, but it is still too weak to stop the process of environmental degradation, although nature has turned a red light on humans.

The earth on which human beings live is a complex system composed of natural, social, economic, cultural and other factors, the earth not only belongs to us humans, on the contrary, we humans belong to the earth, we humans and other creatures are in a home, but, in the past 2000 years, there are 106 species of mammals and 127 species of birds extinct on the earth, 406 species of endangered mammals, 593 species of birds, 209 species of reptiles, 242 species of fish, oh my! That's a staggering number.

The green earth is the carrier of our human beings, and only the harmonious development of man and nature can we have a better tomorrow together. If human beings really consciously plant trees and protect the environment, then there will be no Arbor Day, World Environmental Protection Environment Day, World No Smoking Day and other festivals, which warn us to protect the environment.

It is often sufficient, and it is not excessive, and it is often insufficient if it is used without moderation. "But hundreds of years later, modern civilization has eclipsed our green planet.

Come on, let's protect our beautiful and fragile planet together! Because only the human mind can be content with this beauty, and we have no choice but to be kind to the earth, the only planet for mankind.

1. United Nations Environment Programme.

2. Sustainable development.

3. Greenhouse effect.

4. Protect human health.

5. Whoever pollutes will be treated.

6. Environmental impact report.

7. Concentration. 8. The eighties.

9. Method standards.

10. It is necessary to apply for registration in accordance with the law, obtain a mining license, and obtain mining rights.

11. Traditional agriculture.

13. Temporary pollutant discharge permit.

14. Administrative departments in charge of environmental protection.

15. Environmental criminal liability.

1、a2、c

3、b4、a

5、c6、a

7、b8、b

9、b10、b

There is only one life, and there is only one earth.

The earth is everyone's great mother, what should we do for her?

Between the sky and the land, we enjoy the fresh air;

Between the North and South Poles, we hold the flowers of love.

Give every pair of eyes a bright glow.

Give every friend in the river the clear water, give every animal fresh food, and let every seed grow steadily.

Let the representatives of the animal kingdom take to the pulpit of the United Nations;

Let the green ancient paulownia tree tell the past and the future.

Turn the battlefield into a green grassland, let the cannonballs shoot beautiful flowers, put the painter's work on display in the museum, and invite pine trees and swans to visit the city.

Blue eyes and black eyes express the same kind of hope;

Sons and daughters will have a sacred duty to turn the earth into a wonderful paradise on earth!

The earth becomes a pig's nest. Viruses and bacteria are large.

Scientists once predicted that the Black Death was epidemic in Europe in the 15th century, when traffic spread from Europe to North Asia in less than half a year, and four million people died. Traffic now travels across the globe in just five days.

In addition, it also pollutes water and air, causing irreversible consequences. Caused a large number of biological extinctions. In short, humanity will not survive.