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CD
4 tháng 2 2018
Fresh water is the most important source of life on the earth. Any living thing may survive without food for days however it is impossible to imagine life without water and oxygen. The ever increasing human population enhances the demand of more water for purposes like drinking, washing, performing industrial processes, irrigating crops, arranging swimming pools and other water-sports centres. Water pollution is done by the people of all over the world because of increasing demands and competitions of luxuries life. Waste products from many human activities are spoiling the whole water and decreasing the amount of oxygen available in the water. Such pollutants are altering the physical, chemical, thermal, and biological characteristics of the water and adversely affecting the lives inside as well as outside the water.
When we drink the polluted water, harmful chemicals and other pollutants goes inside our body and deteriorates all the body organs functioning and puts our lives in danger. Such harmful chemicals also disturb the lives of animals and plants greatly. When plants absorb dirty water through their roots, they stop growing and die. Thousands of seabirds are killing because of the oil spilling from ships and industries. High level of water pollution is done due to the chemicals coming out of the agricultural usage of fertilizers, insecticides and pesticides. The effect of water pollution varies from place to place upon the type and amount of water contamination. The degradation of drinking water needs an urgent basis prevention method which is possible by the proper understanding and support from the end of each and every person living on the earth.
DC
1
AL
5 tháng 5 2021
Currently, the earth is heavily polluted, causing water pollution and air pollution. The main cause of pollution is the lack of human awareness, but partly due to floods, storms, melting snow, drought, ... are also factors that seriously affect the above water sources. Earth. Surely this all of us can also feel. The consequences of pollution are severe. It caused acid rain in European countries, destroying everything in its path. In addition, air pollution causes a variety of respiratory-related illnesses that are very serious, and studies show that air pollution can increase the frequency of respiratory allergies, particularly. are people living in urban compared to rural residents. Children raised in heavily polluted areas are more likely to experience structural changes in the nasal mucosa. This can cause airway weakness, lung infection and inflammation. Not only that, even more horrible is that it is also causing a hole in the ozone layer of the greenhouse effect, making the earth gradually warming. The melting ice at the poles makes the sea level rise higher and higher, causing flooding in lowland areas. It can also cause cancer, one of the most terrible and difficult to cure diseases at that time. We can see the horrors of pollution, so let's protect the environment together, the consequences will be greatly reduced.
1 tháng 6 2021
Topic 1:
English is a common language that is quite diffucult to understand and to learn. But there are many countries that speak English, making English as their native language. America is one of them. America is an English-speaking country. English is a common language in America. As you know, America is very developed, and this developed country is using 1 international language, that is English. And as I know, most Americans speak Englishs .Due to the fact that a few hundred years ago, Colossians discovered. Although American and English are 1, but in there are still some words different from English like football (soccer) or some words with "u" missing word like color (colour) or neighbor (neighbour). English is very diverse, and our country is starting to use English as a second language.
1 tháng 6 2021
Topic 2:
Summer is a fun season, so there are lots of activities in summer. We can go to the beach and play volleyball, and swim at sea. Then we can sit and enjoy the famous delicious specialties. The second activity, we can go camping together, it's fun, isn't it? Sitting by the fire together, singing good songs, it's wonderful. For those who love adventure, summer is a great vacation to explore mysterious caves, mysterious forests and even deep carpeted valleys with no bottom. And we can join the summer camp, have fun, and the summer is great, right? Summer is a great season, not only that it's also a vacation, you can have lots of fun summer activities with your family and friends. Here are my opinions, if you like, give them a try!
KY
16 tháng 5 2022
Tham khảo mấy cái definition với causes effects solutions r tự viết he
Soil pollution happens when human activities destroy the earth’s surface.
Causes: pesticides, herbicides, chemical industrial waste, deforestation...
Effects: soil pollution, soil erosions, the upper layer of soil is damaged, effects on wild-life...
Solutions: Fine heavily people who cut the forest and those who release chemicals waste into the ground.
16 tháng 5 2022
Refer:
Nowadays, pollution is a popular term with everyone in the world and air pollution is one type of pollution. The definition of air pollution is one such form that refers to the contamination of the air, irrespective of indoors or outside. A physical, biological or chemical alteration to the air in the atmosphere can be termed as pollution. There are some main reasons which cause air contamination such as burning of fossil fuels, agricultural activities, exhaust from factories and industries, mining operations, and indoor air pollution. Air pollution always has bad effects on our life. Harmful gases, dust, and smoke enter into the atmosphere and make it difficult for plants, animals and humans to survive. We also can see some examples of the result of air contamination which occurs around us as global warming, acid rain, and depletion of ozone layer. The effects of air pollution are alarming, so governments over the world should have suitable policies of protecting the environment, especially air quality to create a clean world for our generation in the future.
Tham khảo nè :))
When thermal pollution happens, the water temperature in streams, rivers, lakes, or oceans changes. It is one of the most serious types of pollution.
Thermal pollution can have many different causes. Power station are one factor. They use water in the nearby lakes or rivers to cool their equipment, which heats up the water. Then they dump the hot water back into its source. Thermal pollution may also happen due to the discharge of cold water from reservoirs into warm rivers.
Thermal pollution can have dramatic effects. Most aquatic creatures need a certain temperature to survive. Warmer water has less oxygen in it, and this can harm fish populations. Besides, warmer water can cause harmful algal blooms. This can change the colour of the water like in the first picture and, more seriously, the algea poisons the fish.
So, in many places, we build cooling towers like in the second picture to cool down the water from power stations.
Tham khảo
Thermal pollution is the degradation of water quality by any process that changes ambient water temperature. A common cause of thermal pollution is the use of water as a coolant by power plants and industrial manufacturers. When water used as a coolant is returned to the natural environment at a higher temperature, the sudden change in temperature decreasesoxygen supply and affects ecosystem composition. Fish and other organisms adapted to particular temperature range can be killed by an abrupt change in water temperature (either a rapid increase or decrease) known as "thermal shock."
Urban runoff—stormwater discharged to surface waters from roads and parking lots—can also be a source of elevated water temperatures.