In order to further prove that humans and animals can't live without oxygen, my mother and I came to a factory near my home. The factory is full of dust, which keeps me coughing. I feel very uncomfortable. Then, I ran to a forest where the air was really good! It feels refreshing. This experiment can prove that plants can transport oxygen and make people breathe smoothly.
How scientific is this? My father and I went to Xinhua Bookstore to check the information and summarized the following points: (1), people must rely on plants to survive. If a person doesn't eat or drink for several days and nights, he may die after a few minutes of lack of oxygen, which is the greatest need for human survival! An adult breathes more than 20,000 times a day, inhales 0.75 kg of oxygen and distributes 0.5 kg of carbon dioxide. Nine kilograms. (2) Breathing of animals and plants and burning of substances also consume oxygen and release carbon dioxide. Isn't the oxygen in the air decreasing day by day? But the reason why there is no such terrible crisis between heaven and earth is that plants can produce oxygen, and carbon dioxide is the delicacy of plants. (3) According to statistics, a hectare of forest can retain about 32 tons of dust a year and suck out about 85 tons of water a day. If there were no plants, the oxygen on the earth would be exhausted in about 500 years. Because there are plants that continuously deliver oxygen to the earth, the oxygen in the air can be kept basically constant.
Therefore, the oxygen needed for human life and activities must be provided by plants. In this era of rapid technological development, please stop cutting down trees and destroying plants. Let's love nature together!
Harmonious relationship between plants and people ① People must rely on plants to provide oxygen, and only plants can make oxygen. If a person doesn't eat or drink for a few days, he may die after a few minutes of lack of oxygen, which is the first need of human life activities!
(2) Breathing of animals and plants and burning of substances also consume oxygen and release carbon dioxide. So, isn't there more oxygen in the air every day? Don't! There has never been such a crisis between heaven and earth because plants are not only "factories" for natural oxygen, but also "vast markets" for absorbing carbon dioxide.
According to statistics, 1 hectare of broad-leaved forest can produce 750 kilograms of oxygen and eat 1000 kilograms of carbon dioxide every day during the growing season. Therefore, as long as there are 6,543,800 square meters of trees, it can supply a person with oxygen demand and absorb the allocated carbon dioxide. Because there are plants that constantly supplement oxygen, the oxygen in the air can be kept basically constant. On the contrary, if there are no plants, the oxygen on the earth can be used up in about 500 years.
Protecting the environment, nature and vegetation means protecting human beings!
The relationship between water, animals, plants and human beings. Animals, plants and human life activities are inseparable from water.
The most abundant compound in animals, plants and humans is water.
The relationship between environment and human beings is 450 words. From ancient times to the present, environment and human beings have an inseparable relationship. Beautiful environment can bring us a happy mood. However, the harsh environment will have a great impact on our physical and mental health. Marx also said: "People create the environment, and the environment also creates people." Yes, the environment is always the most important problem for human beings.
The natural environment in which we live is the surface of the earth. Air, water and rocks (including soil) constitute the atmosphere, hydrosphere and lithosphere. At the intersection of these three circles, there is a biological biosphere. Under the action of solar energy, these four cycles carry out material circulation and energy flow, so that human beings can survive and develop.
According to scientific determination, the proportion of more than 60 chemical elements in human blood is very similar to that in the earth's crust. This shows that man is the product of the environment. The relationship between man and the environment is also manifested in the exchange of substances in the human body and substances in the environment. For example, the human body inhales oxygen and distributes carbon dioxide through metabolism; Drinking clean water and eating rich food can maintain the development, growth and inheritance of the human body and exchange substances in the human body with those in the environment. If this balance relationship is destroyed, it will endanger human health.
In order to survive and develop, human beings need to obtain resources from the environment. In the early days, due to the small population, human beings had no obvious influence and destruction on the environment. For a long time, natural conditions have dominated the fate of mankind. In the slash-and-burn era, in order to feed themselves, survive and develop, human beings began to destroy forests and open up wasteland, which destroyed the environment to some extent. As a result, environmental problems caused by human factors have emerged. However, due to the low level of productivity at that time, the impact on the environment was not great.
During the industrial revolution, after human beings learned to use machines, their productivity was greatly improved and their impact on the environment was also increased. In this century, the ability of human beings to use and transform the environment has never been improved, and the scale has gradually expanded, creating huge material wealth. It is estimated that the agricultural products obtained by modern agriculture can feed 5 billion people, while the green plants produced by photosynthesis and the animals they feed on the original land can only feed 10 million people. It can be seen that human beings have gradually occupied a dominant position in the environment. However, serious environmental pollution and ecological destruction have also appeared in front of human beings. Air pollution is serious, water resources are in unprecedented shortage, forests are destroyed, cultivated land is reduced, a large number of species are on the verge of extinction, and the natural environment on which human beings depend is in crisis. The deteriorating environment has put forward to mankind that protecting nature and maintaining ecological balance are the most urgent problems today.
In the past 200 years, human science and technology have advanced by leaps and bounds, and various industrialized facilities have also risen rapidly. Almost all kinds of energy are used by people. When we enjoy the convenience brought by the same technology, have we ever thought about the impact of the development of technology on the environment?
The greatest impact of the development of modern technology on the environment can be said to be global warming. According to statistics, the global average temperature of 198 1 ~ 1990 increased by 0.48 degrees Celsius compared with that of 100 years ago, while the global average temperature climbed by about 0.6 degrees Celsius in the last century. In the northern hemisphere, the thawing period of ice and snow in spring is 9 days earlier than that before 150, but the start time of frost in autumn is about 10 days later. The 1990s was the warmest decade since the mid-Kloc-0/9th century when temperature records began. The hottest years recorded are: 1998, 2002, 2003, 200 1, 1997. The above shocking information just reflects the enormous impact of inappropriate scientific and technological development on the environment.
Of course, environmental degradation is not limited to global warming. Sandstorm is also the product of human not caring for the environment. Sandstorm is a kind of disastrous weather unique to arid areas. The wind force of strong sandstorm can reach more than 12. Strong winds produced by sandstorms can destroy buildings, trees and so on. , causing casualties, scraping off the fertile soil on the surface of farmland, exposing the roots of crops, usually flooding farmland, channels, houses, roads, grasslands, etc. Further weaken the fragile ecological environment in the north in the form of sandstorm; Low visibility will lead to airport closure and various traffic accidents. In the first ten days of April in 20001year, strong sandstorms occurred in Ningxia and Inner Mongolia, resulting in the loss or death of 25,000 livestock and direct economic loss of 65.438+0.5 billion yuan. On April 5-9, 2002, strong sandstorms occurred in parts of Inner Mongolia, Hebei and Liaoning, causing 9 deaths in Inner Mongolia, and10.5 million livestock were lost or killed. On March 26-28, 2004, sandstorms caused more than 5,000 livestock in Xilin Gol League to disappear or die, and 22 people were missing in Zuo Qi, Su Nite. More than 200 flights were delayed nationwide/KLOC-0.
Pollution worse than sandstorm is everywhere. White pollution is one of them. White pollution refers to the environmental pollution caused by waste plastics and their products. Plastic is not easy to degrade, which affects the beauty of the environment and contains potentially harmful components. Because plastic as packaging material is mostly white, it is called white pollution. According to the survey, 3% of Beijing's domestic garbage is packed in waste plastics, with an annual total of about 6,543,800 tons. 7% of Shanghai's domestic waste is packaged in waste plastics, with an annual total of about 6,543,800 tons. In Tianjin, the annual waste plastic packaging also exceeds 6,543,800 tons. Every year in Beijing, about 2.3 billion plastic bags, 220 million disposable plastic tableware and 6.75 million square meters of discarded agricultural films are discarded in the environment. People jokingly call it "suburban white." Waste packaging plastics not only affect the city appearance and natural landscape in the environment, causing "visual pollution", but also are difficult to degrade, which will also cause potential harm to the ecological environment, such as: mixing into soil, affecting the absorption of nutrients and water by crops, leading to crop yield reduction; The seepage of plasticizers and additives will lead to groundwater pollution; Burning with municipal waste will produce harmful gases, pollute the air and endanger human health; Landfill treatment will occupy land for a long time, and so on.
Of course, technological development is not without its merits. Scientific power is like a double-edged sword. If you are not careful, you will hurt yourself. We should make rational use of all kinds of resources, and don't let the misery of resource exhaustion come ahead of time. The environment is always the capital of everything, and the deterioration of the environment directly affects us. We humans have an inseparable relationship with the environment. Once the environment deteriorates, we will lose our home on which to live! For our only home, please protect this precious and beautiful environment!
The relationship between medicinal botany and human beings is to solve the problem of medicinal plants. It has been recorded in China since human society that medicinal plants are traditional Chinese medicines in China, and famous doctors in China all started with medicinal plants. Li Shizhen, Bian Que, An Daoquan and Sun Simiao. Everyone has studied herbal medicine, and the famous Shennong in China has tasted herbal medicine.
Bryophytes are widely distributed in humid places such as forests and swamps, and can grow in a large area under suitable environment. The role of moss in nature: the pioneer of nature and the indicator plant for monitoring air pollution. And soil and water conservation.
The relationship between animals, plants and human life? Plants are the lifeblood of all animals and humans. Oxygen produced by plants supplies animals, plants and human life. Animals provide meat for human beings. People can use plants to feed animals. People can also produce animals and plants and their living expenses. Plants are the foundation of human life. So the three are inseparable and complement each other.
The relationship between gymnosperms, angiosperms and humans? It plays an important role in making oxygen and absorbing carbon dioxide, and can beautify the environment. The seeds of gymnosperms can provide food for human beings.
The composition about the relationship between animals and plants and human beings is environmental protection, and this word has disappeared for a long time. Finally, one day, it reappeared in life. In recent years, trees have been cut down excessively and gradually reduced; The continuous disappearance of forests has led to the endless expansion of deserts and floods ... there are many such things. Because of this, our city will be in jeopardy. As long as we are not careful, cities may be destroyed and human beings may also perish. For a long time, the word "environmental protection" disappeared from the historical stage. However, the word finally appeared and saw the light of day again. In our life, there is such a biological chain: trees, birds and insects. Birds need to nest in big trees; Trees are food for insects; Birds have to prey on worms, which is a delicious dish. If this biological chain lacks three things, it cannot be established, and it plays an important role in our life. Let's think about it! Without birds, insects will lose their natural enemies, which means that they will keep biting leaves, absorbing resin, gnawing at tree trunks and digging up tree hearts. Without the interference of birds, insects will multiply too fast, which means that trees will gradually become extinct. There will be no trees. Without trees, there would be no oxygen, so we can't live. However, for bugs, we can't get rid of them, which really makes people helpless! Let's think about our present situation again! We humans cut down trees without restraint. No matter how many trees are limited, they can't stand such cutting. Now oxygen has
Discussion on the relationship between animals and plants and human beings Plant name: Ginkgo biloba
The relationship with human life has the effect of inhibiting seedlings and killing insects.
Plant name Jasminum nudiflorum
The relationship with human life appears in spring.
Plant name Cedar
Examine the relationship with human life.