Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
viết định nghĩa, nguyên nhân, ảnh hưởng, giải pháp het roi ah
Noise pollution is a very special type of pollution.
(Definition:) It is known to be the exposure to some high sound levels that may lead to adverse effects in humans or other living organisms. (Causes:) Noise becomes harmful when it exceeds 75 decibels (dB), such as the sound at a busy residential road. Noise is painful when above 120 dB, such as the sound of a jet taking off. (Effects:) Noise pollution affects not only the hearing but also the nervous system. It can make us deaf or have high blood pressure, nervousness, hearing loss, and sleep disturbances.
Bài này cô viết về ô nhiễm tiếng ồn, một loại ô nhiễm xảy ra ở cuộc sống hiện đại.
Cô chúc em học tập vui vẻ và có nhiều trải nghiệm bổ ích tại Hoc24.vn nhé!
Topic 2:
The english speaking country i want to visit is Singapore. Firstly because it is the cleanest country in the world. With the clean enviroment, we can prevent some health problems. Secondly, Singapore has alot of interesting sight-seeing such as: Universal Park, Marina Bay, Merlion,... So the tourists can have some relaxable moment. In my opinion, although Singapore is quite small, it cuisine is very impressive. It has alot of foods and drinks that tourists have to try when come there. In short, Singapore is an impressive enlish speaking country for me to visit.
Còn nhiều lỗi ngữ pháp bạn nhớ check lại nhé ^^
Nowadays, one of the biggest problems human are facing with is water pollution. Water pollution is defined as the presence in groundwater of toxic chemicals and biological agents that exceed what is naturally found in the water and may pose a threat to human health and/or the environment. A lot of causes are responsible for this issue. And they lead to extremely bad consequences. I’d like to explain more in the following paragraphs.
Some typical causes of water pollution are Industrial waste, Sewage and waste water, Mining activities, Accidental Oil leakage, Burning of fossil fuels, Chemical fertilizers and pesticides, … These agents contribiute to water pollution.
And the consequences? Of course, it is human health! Human are likely to get into trouble with some diseases such as hepatitis by eating seafood that has been poisoned. Water pollution also brings about the death of aquatic (water) animals, Disruption of food-chains, Destruction of ecosystems.
In conclusion, water pollution is a alarming problem that needs to be solved as soon as possible. The sooner we solve it, the more healthy we are.
1 They are air pollution, water pollution, and land pollution.
2 - The causes of one type in my area is Factory emissions
- Affect: + Make acid rain
+ Affects Respiratory system of people
+ Air pollution
3 - Clean the school grounds and in the classroom
- plant a lot of trees
- dump garbage in the trash
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.
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.