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提问人：网友biboli 发布时间：2022-01-07

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Pollution occurs whenever unnatural substances are introduced into an environment. Most

ocean pollution caused by humans are concentrated along the 【M1】______ coasts of continents. Lets see what some of the pollutants are. Industrial wastes sometimes get to seawater. Often, 【M2】______ these contain(concentrations)of metals and chemicals that harm organisms. Solid wastes, such as plastic bags and fishing line left lying on the beaches, can entangle in animals. Medical waste such as needles, plastic 【M3】______ tubing, and bags are a threat to both humans and animals. Pesticides, which include herbicides(weed killers) and insecticides(insect killers), used in farming reaching the ocean as runoff. They become 【M4】______ concentrating in the tissues of marine organisms. 【M5】______ Crop fertilizers and human sewage create a different kind of problem. They fertilize the water. This causes some types of algae to produce very rapidly. 【M6】______ When these algae die, theyre decomposed by huge amount of bacteria. The problem is that the bacteria use 【M7】______ up much of the oxygen in the water during respiration. However, other organisms such as fish cant get the 【M8】______ oxygen they need, and they die. Oil spills also pollute the ocean. Youve heard in the news about major oil spills caused to tanker 【M9】______ collisions, and leaks at offshore oil wells. Another source of oil pollution is oil mixed with wastewater thats pumped out of ships. In addition to these resources, oil discarded from cars and industries is 【M10】______ sometimes dumped into streams. It, too, eventually reaches the ocean.

【M1】

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更多“Pollution occurs whenever unnatural substances are introduced into an environment. Most”相关的问题

第1题

Please write a paragraph of about 150 words. Air pollution occurs for a variety of reasons.

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第2题

Light pollution occurs when______A．artificial lights illuminate the night sky.B．the moon l

Light pollution occurs when______

A．artificial lights illuminate the night sky.

B．the moon lights up the night sky.

C．too many stars are visible in the night sky.

D．streetlights are turned off.

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第3题

32 Light pollution occurs whenA artificial lights illuminate the night sky.B the moon ligh

32 Light pollution occurs when

A artificial lights illuminate the night sky.

B the moon lights up the night sky.

C too many stars are visible in the night sky

D streetlights are turned off.

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第4题

As more and more large factories are built in China, it can be infered that ______ .A．Chin

As more and more large factories are built in China, it can be infered that ______ .

A．China will face the big challenge of pollution

B．no pollution problem occurs in China

C．there will be more traffic accidents in China

D．the weather will become bad in China

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第5题

A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel no

zzleThis requires immediate repair because of the _______.

A.high cost of fuel

B.serious fire hazard

C.possibility of pollution

D.poor combustion which will occur in that cylinder

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第6题

你认为下面哪句话，属于摘要中对研究发现意义的探讨？

A、High generalization ability of support-vector networks utilizing polynomial input transformations is demonstrated.

B、We find that ozone production occurs at lower NOx and much larger VOC concentrations than does its summertime urban counterpart, leading to carbonyl (oxygenated VOCs with a C = O moiety) photolysis as a dominant oxidant source.

C、Together, the module and survey results confirm the need to include such inquiry-based activities into the higher education classroom, thereby helping students hone their critical thinking and question asking skill set and facilitating their professional development in astrobiology.

D、The negative effect of increasing atmospheric nitrogen (N) pollution on grassland biodiversity is now incontrovertible.

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第7题

Light Night, Dark StarsThousands of people around the globe step outside to gaze at their

Light Night, Dark Stars

Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer(天文学家) with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo. But when people are surrounded by city lights, he says, they're lucky to see 150 stars.

If you've ever driven toward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates(照亮) the night sky. This haze(薄雾) of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult.

Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another", Ward says, "that city will suffer the effects of light pollution on a much greater scale".

Hazy skies also make it far more difficult for astronomers to do their jobs.

Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring(使变模糊) the faint(微弱的) light given off by distant stars. And if scientists can't locate these objects, they can't learn more about them.

Light pollution doesn't only affect star visibility. It can harm wildlife too. It's clear that artificial light can attract animals, making them go off course. There's increasing evidence, for example, that migrating(迁徙) birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night", he says, "it has a very disruptive(破坏性的) influence". Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.

On a clear night, people can see______

A．150 stars.

B．hundreds of stars.

C．one thousand stars.

D．more than 14,000 stars.

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第8题

Light Night, Dark StarsThousands of people around the globe step outside to gaze at their

Light Night, Dark Stars

Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view. people can see more than 14,000 stars in the sky, says Dennis Ward. an astronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder. Colo. But when people are surrounded by city lights, he says, they're lucky to see ISO stars.

If you've ever driven toward a big city at night and seen its glow from a great distance, you've witnessed fight pollution. It occurs when light from streetlights, office buildings, signs, and other sources streams into space and illuminates the night sky. This haze of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult.

Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another." Ward says, "that city will suffer the effects of light pollution on a much greater scale."

Hazy skies also make it far more difficult for astronomers to do their jobs.

Cities are getting larger. Suburbs are growing in once dark. rural areas. Light from all this new development is increasingly obscuring the faint light given off by distant stars. And if scientists can't locate these objects, they can't learn more about them.

Light pollution doesn't only affect star visibility. It can harm wildlife too. It's clear that artificial light can attract animals, making them go off course. There's increasing evidence, for example, that migrating birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night," he says, "it has a very disruptive influence." Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.

When can people see 14,000 stars？

A．When they have a fairly good telescope.

B．When they are in a large city.

C．When the night sky is clear of clouds, moonlight and artificial lights.

D．When the night sky is without haze and fog.

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第9题

你认为下面哪句话，属于摘要中对研究发现意义的探讨？（)

A.High generalization ability of support-vector networks utilizing polynomial input transformations is demonstrated.

B.Together, the module and survey results confirm the need to include such inquiry-based activities into the higher education classroom, thereby helping students to hone their critical thinking and question asking skill set and to facilitate their professional development in astrobiology.

C.The negative effect of increasing atmospheric nitrogen (N) pollution on grassland biodiversity is now incontrovertible.

D.We find that ozone production occurs at lower NOx and much larger VOC concentrations than does its summertime urban counterpart, leading to carbonyl (oxygenated VOCs with a C = O moiety) photolysis as a dominant oxidant source.

点击查看答案

第10题

Light Night, Dark Stars Thousands of people aroundthe globe step outside to gaze at their

Light Night, Dark Stars

Thousands of people aroundthe globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificiallights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, anastronomer with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo.But when people are surrounded by city lights, he says, they're lucky to see 150 stars.

If you've ever driventoward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs whenlight from streetlights, office buildings, signs, and other

sources streams into space and illuminates the night sky. This haze oflight makes many stars invisible to people on Earth. Even at night, big citieslike New Yorkglow from light pollution, making stargaz-ing difficult.

Dust and particles ofpollution from factories and industries worsen the effects of lightpollution."If one city has a lot more light pollution than another,"Ward says, "that city will suffer the effectsof light pollution on a muchgreater scale. "

Hazy skies also make it farmore difficult for astronomers to do their jobs.

Cities are getting larger.Suburbs are growing in once dark, rural areas. Light from all this newdevelopment is increasingly obscuring the faint light given off by distantstars. And if scientists can't locate these objects, they can't learn moreabout them.

Light pollution doesn't onlyaffect star visibility. It can harm wildlife too. It's clear that artificiallight can attract animals,'making them go off course. There's increasingevidence, for example, that migrating birds use sunsets and sunrises to helpfind their way, says Sydney Gauthreaux Jr. , a scien- tist at Clemson Universityin South Carolina."When light occurs at night, " he says, "it has a very dis- ruptive influence." Sometimes birds fly into lighted towers, high-rises, and cables fromradio and tele- vision towers. Experts estimate that millions of birds die thisway every year.

41.When can people see 14,000 stars？

A.When they have a fairly good telescope

B.When they are in a large city

C.When the n:ght sky is clear of clouds, moonlight and artificial lights

D.When the night sky is without haze and fog

点击查看答案

第11题

下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。第一篇Light Night, Da

下面有3篇短文，每篇短文后有5道题。请根据短文内容，为每题确定1个最佳选项。

第一篇

Light Night, Dark Stars

Thousands of people around the globe step outside to gaze at their night sky. On a clear night, with no clouds, moonlight, or artificial lights to block the view, people can see more than 14,000 stars in the sky, says Dennis Ward, an astronomer (天文学家) with the University Corporation for Atmospheric Research (UCAR) in Boulder, Colo. But when people are surrounded by city lights, he says, they're lucky to see 150 stars.

If you've ever driven toward a big city at night and seen its glow from a great distance, you've witnessed light pollution. It occurs when light from streetlights, office (照亮) the night buildings, signs, and other sources streams into space and illuminates ~ sky. This haze (朦胧) of light makes many stars invisible to people on Earth. Even at night, big cities like New York glow from light pollution, making stargazing difficult.

Dust and particles of pollution from factories and industries worsen the effects of light pollution. "If one city has a lot more light pollution than another," Ward says, "that city will suffer the effects of light pollution on a much greater scale."

Hazy skies also make it far more difficult for astronomers to do their jobs.

Cities are getting larger. Suburbs are growing in once dark, rural areas. Light from all this new development is increasingly obscuring (使变模糊) the faint (微弱的) light given off by distant stars. And if scientists can't locate these objects, they can't learn more about them.

Light pollution doesn't only affect star visibility. It can harm wildlife too. It's clear that artificial light can attract animals, making them go off course. There's increasing evidence, for example, that migrating (迁徙) birds use sunsets and sunrises to help find their way, says Sydney Gauthreaux Jr., a scientist at Clemson University in South Carolina. "When light occurs at night," he says, "it has a very disruptive (破坏性的) influence." Sometimes birds fly into lighted towers, high-rises, and cables from radio and television towers. Experts estimate that millions of birds die this way every year.

31 On a clear night, people can see

A 150 stars.

B hundreds of stars.

C one thousand stars.

D more than 14,000 stars.

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