Just as noise pollution negatively impacts human health, it also affects wildlife. It can affect animal communication, their abilities to find food and impact where they live. A recent study published in Biology Letters found that human-created noise is affecting a wide range of animals. Noise pollution is caused by cars, trucks, airplanes, ships, factories, industrial activities and sounds from cities, among others. Researchers found that wildlife in many different land and water ecosystems showed significant responses to human-created noise.
For example, bats use ultrasonic sound waves to get around and to find food. However, noise pollution affects this and causes them to spend more time and energy locating their food source. Shipping lanes in the UK can be deafening to harbor seals, and noises from ships are seriously impacting killer whales ability to find food and avoid potential dangers, according to episode 2 of CBC s Killers: J pod on the brink (边缘). And it’s no secret that many human-created conditions, like noise, are changing the behavior of birds. You may be surprised to learn that plants are also impacted, since pollinators (传粉昆虫) often relocate to quieter areas.
Not unlike the impact of light pollution on insects, noise pollution is causing change. It can change the types of species living in many different ecosystems, which in turn impacts the functions of these areas, according to The Guardian.
The good news is that if noise is reduced or simply turned off, it more or less removes the issue. The impact does not remain in the same way as other forms of pollution, like plastic or chemicals. And efforts are already underway in Canada.
BC Ferries is working to lessen the effects of underwater noise, especially along ferry routes that pass through critical habitats. WCS (Wildlife Conservation Society) Canada is encouraging the federal government to increase protective measures in the Arctic. They’re also working with international colleagues to address the increase of noise in the region as a result of new shipping routes.
While these initiatives demonstrate progress, tightening rules and regulations around noise pollution is an important measure for conserving wildlife in Canada.
1. Why do bats spend more time looking for food?2. What is the influence of noise pollution on ecosystems?
3. Please decide which part is false in the following statement, then underline it and explain why.
Noise pollution affects animals in many ways, and compared with other forms of pollution, noise pollution is harder to deal with.
4. Please give some advice on how to reduce the effects of noise pollution on animals. (In about 40 words)
2 . A new study by scientists at Utrecht University concludes that about half of global wastewater is treated, rather than the previous estimate of 20%. Despite this promising finding, the authors warn that treatment rates in developing countries are still very low.
Humans and factories produce vast quantities of wastewater per day. If not properly collected and treated, wastewater may severely threaten human health and pollute the environment.
The authors use national statistics to estimate volumes of wastewater production, collection, treatment and reuse. “Globally, about 359 billion cubic metres of wastewater is produced each year, equivalent to 144 million Olympic-sized swimming pools,” says Edward Jones, PhD researcher at Utrecht University. “About 48 percent of that water is currently released untreated. This is much lower than the frequently announced figure of 80%.”
While the results show a more optimistic outlook, the authors stress that many challenges still exist. “We see that particularly in the developing world, where most of the future population growth will likely occur, treatment rates are falling behind,” Jones explains. “In these countries, wastewater production is likely to rise at a faster pace than the current development of collection and treatment basic facilities. This poses serious threats to both human health and the environment.”
The main problem, especially in the developing world, is the lack of financial resources to build basic facilities to collect and treat wastewater. This is particularly the case for advanced treatment technologies, which can be extremely expensive. However, the authors highlight potential opportunities for creative reuse of wastewater streams that could help to finance improved wastewater treatment practices.
“The most obvious reuse of treated wastewater is to increase freshwater water supplies,” Jones states. Treated wastewater reuse is already an important source of irrigation water in many dry countries. However, only 11% of the wastewater produced globally is currently being reused, which shows large opportunities for expansion.
“But freshwater increasing is not the only opportunity,” says Jones. “Wastewater also has large potential as a source of nutrients and energy. Recognition of wastewater as a resource, opposed to as ‘waste’, will be the key to driving improved treatment going forward.”
However, the authors stress the importance of proper monitoring of wastewater treatment factories, accompanied by strong legislation (法律) and regulations, to ensure that the reuse of wastewater is safe. The authors also acknowledge public acceptance as another key barrier towards increasing wastewater reuse.
1. According to the author, the meaning of treating wastewater lies in ________.| A．encouraging new scientific findings |
| B．estimating volumes of wastewater production |
| C．ensuring human health and protecting the environment |
| D．measuring how much wastewater is produced globally per day |
| A．equal | B．harmful | C．useful | D．friendly |
| A．treated wastewater can’t be used as irrigation water |
| B．wastewater production in developing countries is falling |
| C．the treatment of wastewater is more serious than estimated |
| D．public recognition plays an important role in wastewater reuse |
3 . The world’s oceans will likely lose about one-sixth of their fish and other creatures within 100 years if climate change continues on its current path. Every degree Celsius that the world’s oceans warm, their biomass is expected to drop five percent, a study found.
The study predicts that if there is no change in the rate of worldwide greenhouse gas production, there will be a 17-percent loss of biomass by the year 2100. But, if the world reduces carbon pollution, biomass losses could be limited to only about 5 percent.
Warming temperatures are the biggest issue. But climate change also produces oceans that are more acidic and have less oxygen. This also harms sea life. Much of the world depends on the oceans for food or work.
The findings make sense and the possible effects of the predicted losses of animal life are huge. “Climate change has the potential to cause serious new conflicts over ocean resource use as the human population continues to grow,” said scientists.
Marine biologist Boris Worm, who helped run the study, added that the “building blocks of marine life—plankton and bacteria—may decline less heavily.”
“Those marine animals that we use directly, and care about most deeply, are predicted to suffer the most,” said Worm. He works at Canada’s Dalhousie University.
Scientists had already believed climate change would likely reduce future ocean life. But past computer-based studies looked at only part of the picture or used only one model. The latest study used six different computer models to give the best picture look yet, William Cheung said.
University of Georgia marine biologist Samantha Joye was not part of the research. But she praised the study as well researched and extremely detailed, and called it “an urgent call for action”.
1. What does the underlined word “biomass” in paragraph 1 refer to?| A．Ocean temperature. | B．Total marine life. |
| C．Sea condition. | D．Ocean level. |
| A．It may reduce the sea resource. | B．It leads to the extinction of marine life. |
| C．It pollutes the environment of the ocean. | D．It may increase the world population. |
| A．The largest ones. | B．The ones in deep oceans. |
| C．The bacteria on sea surface. | D．Those we humans need most. |
Mussels in Port Phillip Bay are taking in microplastics used in cosmetics(化妆品). The microplastics travel from bathroom sinks to the ocean, where they are easily confused with seaweeds. Because the mussels cannot tell the difference, they take in the plastic along with their normal diet of seaweeds.
According to researcher Dr Charlene Trestrail, the plastic doesn’t affect mussels directly, but it does reduce their ability to digest the real food. It means they miss out on energy and nutrients, which affects their ability to grow and reproduce.
“Besides being a tasty treat for humans, mussels play an important role in keeping marine ecosystems healthy,” Dr Trestrail said. “And because of the reduced ability to grow and reproduce, we could see a drop in mussel populations, with knock-on effects for other marine wildlife.”
While environmental campaigners have worked hard to reduce the amount of plastic in the oceans from easily visible items such as shopping bags and packaging, most people are not aware of the impact of microbeads and other hidden plastics in products including toothpaste or bath scrubs.
“We know lots about how plastics affect animals externally—we’ve all seen photos of birds and turtles twisted in plastic—but this is the first study to investigate how tiny plastics affect animals’ stomachs,” Dr Trestrail said.
There has been a push in recent years to reduce microplastic pollution. But while the Government has supported phasing out(淘汰) microbeads, some cosmetics industries stopped short of banning their use.
We need to take pollution from microplastics seriously. Because they’re so small, once they’re in the ecosystem they are impossible to remove. The only solution is not to use them in the first place.
mussel
1. Why do mussels eat microplastics?
2. What will eventually happen to mussels if they eat microplastics mistakenly?
3. Please decide which part is false in the following statement, then underline it and explain why.
The first thing to solve microplastic pollution is not to use microplastics and some cosmetics industries agreed to stop using microbeads.
4. Please briefly present your own solutions to the plastic pollution problem in your daily life. (In about 40 words)
Pillar coral (柱状珊瑚),
6 . Of all the weird and wonderful creatures living under the sea, perhaps the strangest are jellyfish—those rubbery, cone-shaped creatures found floating in the water, their long tentacles trailing behind.
Some jellyfish species have a bad reputation for scaring away tourists, clogging up fishing nets, and even blocking power station pipes. But with more and more plastic rubbish ending up in the sea, these days you’re as likely to swim into a plastic bag as a jellyfish. Now scientific research is discovering that these rubbery sea creatures might provide an answer—a sticky solution to the problem of plastic pollution.
In recent years, tiny pieces of plastic called microplastic have been a significant problem for the world’s seas and oceans. These plastics are not visible to the eye and aren’t caught by seawater treatment plants due to their small size, so they enter our system and harm our health. They’ve been found in many places—in Arctic ice, at the bottom of the sea and even inside animals. Slovenian scientist, Dr Ana Rotter, heads GoJelly, a European research team of jellyfish ecologists looking into the problem.
Microplastics, plastics in general, are becoming an increasing problem. Dr Ana Rotter says when she was a child, people were more environmentally friendly—not harmful to the environment or having the least possible impact on it. At that time, there were very few single-use plastics—plastic items, like spoons and forks, designed to be used just once, then thrown away. The situation since then has changed dramatically. In fact, there’s been such an increase in microplastics that today the UN lists plastic pollution as one of the world’s top environmental threats.
But how do jellyfish fit into the story? Well, it’s the ‘jelly’ part of jellyfish, and specifically their sticky, jelly-like mucus that is key. Jellyfish produce a thick, sticky liquid called mucus. Dr Ana Rotter has discovered that this mucus has strong absorptive capabilities—it can absorb, take in liquids and other substances. One of the substances jellyfish mucus absorbs are the particles that make up microplastics.
Dr Rotter’s research is still in the early stages, but it’s hoped that jellyfish mucus could hold the key to a future free of microplastic polluted oceans. Scientists are hoping that the mucus’s absorptive properties—its abilities to absorb liquids and other substances and hold them, will allow it to trap particles of plastic floating in the sea. By trapping these, the mucus acts like a magnet—an object that attracts certain materials, like metal, but in this case, microplastic waste.
1. Paragraph 3 mainly talks about ________.| A．where microplastics can be found |
| B．why microplastics can harm our health |
| C．what problems the seas and oceans are facing |
| D．how the research was carried out by the scientist |
| A．Jellyfish species cause a great threat to the sea. |
| B．Jellyfish species like to swim and live in plastic bags. |
| C．Jellyfish mucus can attract metals and break them down. |
| D．Jellyfish mucus can absorb liquids and some other substances. |
| A．Qualities. | B．Substances. | C．Choices. | D．Materials. |
| A．To show the harm that sea and ocean pollution brings to human beings. |
| B．To introduce the living habits of the weird and wonderful creatures in the sea. |
| C．To provide a new method for collecting data on environmental threats in the sea. |
| D．To inform a promising scientific finding for dealing with plastic pollution in the sea. |
7 . Most environmental pollution comes from humans and their inventions. The electric bulbs are thought to be one of the greatest human inventions of all time. However, too much of a good thing has started to negatively impact the environment. Light pollution, the extreme or inappropriate use of outdoor artificial light, is affecting human health and wildlife behavior. There is a global movement to reduce light pollution, and everyone can help.
Light pollution is a global issue. This became particularly obvious when the World Atlas (地图册)of Night Sky Brightness, a computer-generated map based on thousands of satellite photos, was published in 2016. Vast areas of North America, Europe, the Middle East, and Asia are glowing with light, while only Siberia, the Sahara, and the Amazon are in total darkness.
Artificial light can wreak havoc on natural body rhythms in both humans and animals. It interrupts sleep and confuses the circadian rhythm(生理节奏)一the internal, twenty-four-hour clock that guides day and night activities and affects physiological processes in nearly all living organisms. One of these processes is the production of the hormone melatonin(褪黑素), which is released when it is dark and is prevented when there is light. An increased amount of light at night lowers melatonin production, which results in lack of sleep, headaches, stress, anxiety, and other health problems. Blue light, in particular, has been shown to reduce levels of melatonin in humans. It is found in cell phones and other computer devices, as well as in light-emitting diodes (LEDs), the kinds of bulbs that have become popular at home and in industrial and city lighting due to their low cost and energy efficiency.
Studies show that light pollution is also impacting animal behaviors, such as migration (迁徙)patterns and habitat formation. Because of light pollution, sea turtles guided by moonlight during migration get confused, lose their way, and often die. Large numbers of insects, a primary food source for birds and other animals, are drawn to artificial light and are instantly killed upon contact with light sources. Even animals living under the deep sea may be affected by underwater artificial lighting. One study looked at how animals in sea responded to brightly lit panels put under water off the coast of Wales. Fewer filter feeding animals(滤食性动物), such as the sea squirt(海鞘), made their homes near the lighted panels. This could mean that the artificial light is altering ocean ecosystems.
The good news is that light pollution, unlike many other forms of pollution, is reversible(可逆的)and each one of us can make a difference! Now, many people are taking action to reduce light pollution and bring back the natural night sky. Individuals are urged to use outdoor lighting only when and where it is needed, to make sure outdoor lights are properly shielded (遮挡)and direct light down instead of up into the sky, and to close window blinds, shades, and curtains at night to keep light inside.
1. What does the underlined phrase “wreak havoc on” in Para. 3 probably mean?| A．Greatly improve. | B．Well maintain. |
| C．Strictly manage. | D．Seriously damage. |
| A．Light pollution was first studied as a global issue in 2016. |
| B．Deep-sea environment can help animals avoid light pollution. |
| C．Artificial light affects the sense of direction and habits of animals. |
| D．LEDs can be used more because of low cost and energy efficiency. |
| A．Unconcerned. | B．Negative. |
| C．Neutral. | D．Positive. |
| A．To call on people to reduce light pollution. |
| B．To discuss fors and againsts of artificial light. |
| C．To give suggestions to protect environment. |
| D．To show development prospect of artificial light. |
White sand beaches of the Cocos Islands, which are known as a gorgeous tourist destination surrounded by greenish blue water, have now been filled with plastic wastes.
Jennifer Lavers, a marine scientist, went to these tropical islands with her research team. Knowing that lots of beaches were polluted by plastic wastes, the team conducted a careful scientific examination on the coast, only to find the problem caused by pieces of trash humans left was worse than expected.
Not all plastics are to blame. They are necessary in places like hospitals and airplanes, and make our vehicles lighter and more efficient. However, other plastics, especially disposable(一次性的) plastics, account for the growing mess on the beaches. Islands all over the world are jammed with plastics. And the Cocos Islands are no exception.
Apparently, demand for disposable plastics must be reduced greatly. “Why don’t we carry around bags that we can use over and over again?” asked Richard Gross, a chemist who researches innovative ways to make more sustainable plastics. “Let’s carry around reusable lunch boxes. We should understand how serious the situation is.”
Although it is important for individuals to make an effort to avoid using disposable plastics, it is also generally believed that only with international rules can such a deep-rooted, common, and worldwide scourge(灾害) be tackled.
However, the U. N., which engages in dealing with accelerating climate change and public health crises, obviously isn’t paying enough attention to calling for international action on plastic pollution. As a result, billions of plastic products will still be produced every year, many of which will end up in the ocean.
It requires the greatest effort of all time to control plastic pollution in modern society. No matter how tall the hurdles(栏架) are, something has to be done.
1. What did Jennifer Lavers and her research team find?2. What kinds of plastics lead to the increasing wastes on the beaches?
3. Please decide which part is false in the following statement, then underline it and explain why.
Individual efforts and international rules are both required to tackle the plastic pollution, and the U. N. pays much attention to calling for international action.
4. As a student, what will you do to reduce white pollution?
Since people can’t always eat out or cook for
10 . Production of bottled water has grown over the past thirty years from nothing into a $16 billion-per-year business. However, more and more people have been against bottled water use, and environmentalists are
The first reason why you should seriously think about
Secondly, the
Finally, bottled water isn’t even better for your health. Tap water rules in many countries are far
To sum up, by stopping the use of bottled water, and encouraging others to do so, you will be doing the planet an enormous favor and
| A．allowing | B．training | C．calling on | D．commanding |
| A．giving up | B．turning to | C．preparing for | D．believing in |
| A．creates | B．attracts | C．requires | D．shares |
| A．sold | B．recycled | C．found | D．limited |
| A．answer | B．solution | C．contributor | D．service |
| A．test | B．design | C．competition | D．transportation |
| A．shipped | B．wasted | C．developed | D．collected |
| A．older | B．fewer | C．stricter | D．simpler |
| A．dropped | B．changed | C．increased | D．disappointed |
| A．damaging | B．benefiting | C．challenging | D．respecting |
