Why should we conduct research on the biological hazards of environmental pollution and its preventi

Because environmental pollution has a very adverse impact on the growth, development and reproduction of organisms, when the pollution is serious, the morphological characteristics and survival numbers of organisms will undergo obvious changes. The following describes the harm of environmental pollution to organisms in four aspects: acid rain, harmful chemicals, heavy metals and eutrophication of water bodies.

Acid rain acidifies soils and rivers and flows through rivers into lakes, causing lakes to acidify. Acidification of lakes not only kills the plants that grow in and around the lake, but also threatens the survival of fish, shrimp and shellfish in the lake, thereby destroying the food chain in the lake and eventually turning the lake into a "dead lake".

Environmental pollution has a very negative impact on the growth, development and reproduction of living things. When pollution is severe, the morphological characteristics and survival numbers of organisms will change significantly. Here are the four aspects of environmental pollution, including acid rain.

Harmful chemicals, heavy metals, and eutrophication, which are harmful to living things.

Acid rain acidifies soils and rivers and flows into lakes through rivers, causing lakes to acidify. The acidification of lakes not only kills the plants that grow in the lakes and lakes, but also threatens the survival of fish, shrimp and shellfish in the lakes, thus disrupting the food chain of the lakes.

Eventually making the lake a "dead lake". Acid rain can also directly damage the leaves and shoots of land plants, leading to the death of crops and trees.

Nowadays, the harm caused by acid rain is becoming more and more serious, and it has become one of the important problems of global environmental pollution. Sulfur dioxide.

It is one of the main pollutants of acid rain. As the economy burns more coal, oil, and gas, producing more pollutants such as sulphur dioxide, acid rain hazards are likely to become more severe in the future.

It can be said that this topic is a topic of significance to all mankind, because now the environmental pollution is very serious, many creatures are homeless or dead because of environmental pollution, like the polar bear reported a few days ago, like the current weather in the northeast and east has become a disaster, it rains every day in the south, and the south is so hot a while ago, and the climate change is impermanent, all of which are caused by environmental pollution, so I think we should do something to do something from ourselves, what do you say?

The environment has an impact on living things, and organisms can also affect the environment while adapting to the environment The adaptability of living organisms is universal, and organisms must adapt to the environment in order to survive, otherwise they will be eliminated by nature.

1.Adaptation of organisms to the environment:

The adaptation of organisms to the environment is the process of survival of the fittest in natural selection, which promotes the continuous evolution of organisms, and the phenomenon of adaptation of organisms to the environment is common in nature.

The adaptation of organisms to the environment is relative, only to a certain extent, not absolute, complete adaptation, let alone permanent adaptation, that is, each organism can only adapt to a certain environment, not to all environments. Like the snow hare of the Arctic.

In winter, when the harvest arrives, it is replaced with white fur to acclimatize to the snow environment, but if the snow falls late. Such a body color is easy to be spotted by predators.

2.The environmental influence of living beings.

The relationship between organisms and the environment is mutual, and organisms can not only adapt to the environment, but also affect the environment; Conversely, the environment also affects the growth, distribution, etc. of organisms.

Organisms and the environment interact with each other, and it is a long process. In this process, the environment is constantly changing, and so are living things, and the interaction between living things and the environment has created today's thriving biological world.

Examples of adaptation of organisms to their environment:

Plants that grow in arid deserts or deserts have specialized needle-shaped or thorn-shaped leaves, and particularly well-developed root systems, such as cacti and camel thorns.

Wait; Since the living environment is often affected by strong winds in the same direction, only one side of the branches of the tree grows well.

Examples of environmental influences of living beings:

1) Affect the atmospheric environment: plant transpiration.

Increase air humidity.

Lowers air temperature and affects precipitation.

The leaves of some plants can absorb dust and toxic gases, which can play a role in purifying the air.

2) Affect the water environment: red tides caused by certain microscopic plankton.

phenomenon, causing harm to the water environment.

3) Affect the soil environment: earthworms.

It can loosen the soil and increase fertility.

Environmental pollution has a very adverse impact on the growth, development and reproduction of organisms, and when the pollution is serious, the morphological characteristics and survival numbers of organisms will undergo obvious changes. Environmental pollution often has the effects of carcinogenic, mutagenic and teratogenic effects in humans or mammals, collectively referred to as "three effects". The hazards of the "three-way effect" generally take a long time to be revealed, and some of the hazards even affect future generations.