Which of these is one major cause of deforestation?

what happens to animals when humans impact there homes

Where is pollution found on the earth?

Which of these human actions is most harmful to a lake ecosystem?

Salt water is an abundant resource but unusable for irrigation and drinking. As demands on freshwater sources increase, the use of desalination processes to remove salt from ocean water is increasing. A concern of desalinating water is the large amounts of recovered salts that are returned to the ocean. Which of the following describes the most likely impact of desalination on the surrounding ocean environment? 

New fuels are being produced by converting corn and grasses into compounds containing alcohols that can be broken down for energy in various engines. The purpose of this research is to

The presence of wastes, such as plastic bags and motor oil, in lakes and streams miles away from developed areas suggests that

DDT and other pesticides used over 50 years ago are still affecting the environment today. Scientists have found these substances in recent glacier runoff. Glacier runoff occurs during the summer, when precipitation that has fallen on glaciers during the winter is released. Ice layers from existing glaciers have been analyzed. The results of this analysis show that the concentrations of DDT and other pesticides were highest about 10 years after the use of these substances was banned. 

The northern elephant seal was almost hunted to extinction in the 1800s. By the late 1890s, approximately one hundred seals were left, reducing the gene pool of the population. What will be the consequence of this reduction? 

A community is concerned about the water quality of a nearby lake. Increased sedimentation in the lake is endangering the native habitat. The increased sedimentation is most likely caused by which of the following?

When fertilizers run off farmland into streams and ponds, the nitrogen content of the water increases. This can lead to rapid growth of algae in a process called eutrophication. How can this process affect other organisms in the water? 

A strip mining company wants to lease some land that is currently part of a national park. They promise to reclaim the land should any minerals be mined from the area, and they are willing to pay top dollar for the rights. As an ecologist, what factors would you raise with the local government? 

Whaling was a very profitable profession until whale populations crashed. The global community came together to enact a ban on whaling. However, Japan and Norway have not agreed to stop whaling. Which of the following is the most likely consequence of their decision?

According to the graph, what material’s recycling would reduce the largest portion of America’s trash?

1. Which of the following is not a renewable resource?

1. What does the Endangered Species Act do?

When human-made chemicals and garbage find their way into nature and harm the air, soil, and water it is called

1. Why might an introduced animal species overrun native species in an ecosystem?

Which term describes the practice of managing resources so that current needs are met without harming future generations?

The examination was so______ that all the students passed.

Tom sounded ________ when I spoke to him on the phone.

Jane is ……………because her job is ……………. .

Her illness was ________ than we had thought first.

Petrol is twice _____ it was a few years ago.

Thank you for the money. It was ________ of you.

Your English is improving. It is getting _______ .

In the kitchen there is a ______ table.

The shop wasn’t ………crowded ……….this morning it usually is.

_____ we leave, ______ we will arrive.

I have never had a ________ meal than that.

Your writing is terrible. I can _____ it.

There is a _______ bag in the corner of the room.

Please cut my hair _______ the style in this magazine.

The climate in Sa Pa is much colder _______ of Hanoi.

Please give me _______ of the two pieces of the cake.

So far as Mrs. Brown was concerned she did not seem to be in the least _______

I don’t like horror films. I think they are _______ and ______ .

It is not always _______students who do well in tests.

She is far _____ than she used to be.

My _______ brother studies at college.

A. B. C. D.

The situation looks _______ . We must do something.

All living things can be found within a relatively thin layer on or near the surface of the earth. Apart from the sun's energy, all their needs are supplied by the small proportion of the earth's resources contained in this layer. If the water, oxygen and other elements vital for life were only used once, they would soon run out. This is why many of nature's processes work in cycles. There is a constant exchange of the elements between air, earth, water, plants and animals, and these recycling processes ensure that all living things are able to live and grow.

These processes are _____ for life.

Willems walked on homeward weaving the splendid web of his future. The road to greatness lay plainly before his eyes, straight and shining, without any obstacle that he could see. He had stepped off the path of honesty, as he understood it, but he would soon regain it, never to leave it any more! It was a very small matter. He would soon put it right again. Meantime his duty was not to be found out, and he trusted in his skill, in his luck, in his well-established reputation that would disarm suspicion if anybody dared to suspect. But nobody would dare!

He was _____ .

The pupfish that live in Death Valley National Park are called Devils Hole pupfish. They are 1-1/2 inches to 2-1/2 inches (4 to 6 centimeters) long and can survive in water up to 112 degrees Fahrenheit (44 degrees Celsius). The females are brown and white colored; the males are blue and purple colored. Pupfish can flip from one small pool to another, and some are able to hibernate in mud during the winter.

Pupfish are _____ .

I was beginning to learn about the farmers and what I found I liked. They had a toughness and a philosophical attitude which was new to me. Misfortunes which would make the city dweller want to bang his head against a wall were shrugged off with "Aye, well, these things happen."

They were _____ people.

He often bought big sheets of white paper for a penny and gave them to the children to draw on, for he liked to see them drawing. The boys drew steam engines and animals, but Anna Mary was not satisfied with that. She thought she could do better. She wanted to do whole scenes. And she wanted to do them in color. Lacking paints, she used grape juice and crushed berries for color. Sometimes she used a stub of red or blue carpenter's chalk or the red dye that her father used to mark sheep—anything she could get her hands on that would make her pictures bright and cheerful.

She was _____

She was whistling always. She whistled like a bird whistling a tune, clear and soft, clear and sweet, trilling, chirping, or dropping notes one by one as a meadow lark drops them from the sky. I was pleased to hear her whistling again.

She was _____ .

From the tower, he could see the highway and the city as far as the mesa beyond. He focused the binoculars on the mesa and watched the radar installation for a time, but nothing unusual appeared to be happening there. He lowered the glasses slightly to watch the new Green Star encampment down at the roadside park. The area of the park had been roped off. Tents were being pitched. Utility crews worked at tapping the gas and power lines. Several men were engaged in hoisting a sign at the entrance to the park, but they held it edgewise to his gaze and he could not read it. Somehow the boiling activity reminded him of a nomad "carnival" coming to town.

He _____ the area.

Rothenburger had every reason to be confident as she glided to the starting line. She was the defending Olympic champion and had broken Bonnie's world record in a pre-Olympic meet at the Calgary rink. Now, when it counted the most, Rothenburger roared off the starting line. She passed the first 100 meters and the announcer called out her time of 10.57 seconds.

She was

Boston was a bustling, crowded, flourishing town. A great port, its wealth was in its ships. From the West Indies, the ships brought molasses and sugar, raisins, limes, and oranges. From England, they brought paper and glass, thread, fish-hooks, metal tools, and tea, coffee, silk, and spice that English ships had brought to London from the Far East.

Boston was _____ .

Farmers made up 80 percent of Japan's nineteenth-century population of thirty million. Each farmer's rank was determined by the amount of rice he grew. A harvest of 500 bushels, for example, entitled him to have a large home provided it had no parlor and the roof was not tile. A 100-bushel harvest meant a tiny hut with no floor mats.

A farmer's rank depended on his _____ .

The tin Yuki liked most to deliver was the one for Mrs. Jamieson. Her house was warm and cozy and full of wonderful scents of dried rose petals and spices. She usually made a cup of hot cocoa for Yuki whenever she came to visit and then got out something from her bulging closet to show her. Sometimes it was her husband's stamp or shell collection. He had been the captain of a freighter and had collected stamps and shells from all over the world. Sometimes Mrs. Jamieson brought out her jewelry box full of precious stones and rings and bracelets and brooches that the captain had bought for her in Algiers or Istanbul or Lisbon. Yuki loved the jewelry box best.

Mrs. Jamieson was _____ .

The sight and sound of huge bubbles rising in glass columns set the underwater mood in the lobby of the National Aquarium. In central space, daylight fades, giving the feeling of a descent into the ocean depths. The lighted exhibits glow in the darkness. The recorded sounds of ocean waves, seagulls, and distant foghorns can be heard as beluga whales swim in the open pool.

The aquarium provides a _____ atmosphere.

You'll often see a warning sign on the bottle cap that states "Safety Button—Button pops up when original seal is broken." Manufacturers of these bottles seal the top onto the jar or bottle for one of two reasons. In some cases it is done so that air won't oxidize the contents and/or allow bacteria to grow. This gives the bottle a longer shelf life. The seal is also used to let consumers know that no one has tampered with the contents.

Safety seals are _____ .

Peter was handed over to Mr. Treaser for his initial training in the trade of cooper. The little foreman, so grey of complexion and hair that he seemed perpetually covered with a light hoar frost, operated on the assumption that all boys knew nothing. He regarded himself as the only complete repository of knowledge in the art of woodworking. And he was in no hurry to share this knowledge with his apprentices. Mr. Treaser was _____ .

If you're interested in playing hockey, it may be a long time before you actually join a team. You need time to learn how to skate, practice the basics, get in shape, and figure out what your skills are and what position you want to play. Each position in hockey gives equally to the success of the team. You need to _____ .

Both companies wanted to cover as much territory as possible, because they were being paid by the mile. According to the Pacific Railroad Act these contestants for American dollars were to meet head-on and link rails. The Big Four hoped to sprint ahead so that the eventual meeting place would be as far east as possible. It would mean more territory and more money for them. Officials of the Union Pacific were formidable opponents pushing towards the West Coast, intent upon stretching their track as fast and as far as they could. Both companies were engaged in a race with no set finish line. The companies were _____ .

Matt found work at a restaurant, sleeping there at night. One customer, a sailor, told the young boy tales of life aboard a sailing ship, and Matt wanted to try it, too. He left the security of his restaurant job and walked 40 miles (64 km) to the port at Baltimore, Maryland. The sailor _____ Matt.

It was his all-time favorite book and he read it—studied it—often. The cover had a floppy, draped white glove inside an upside-down top hat filled with cards and dice. There was a coiled rope and a handkerchief and a coin beneath a cup. It was a beautiful cover—the first thing that had attracted Jamie to it at the Littleton bookstore. Van had bought it for him, the first time the three of them—Jamie, Van, and Patty—had spent time together and Van was the nicest he would ever be to Jamie. He _____ the book.

Captain Childs had books on geography, history, mathematics, and literature—especially Dickens and Shakespeare. Matt had gone to school in Washington, D.C., but only through the sixth grade, and this wasn't enough for him. So he studied in the captain's library, with Captain Childs as his teacher. The captain taught Matt about people and places and dates, he taught Matt to respect himself and others, and he taught him to be a man who proved his worth by his work. Matt _____ his education.

It was always a pleasure to me to see Willie Winter at a banquet. During a matter of twenty years I was seldom at a banquet where Willie Winter was not also present, and where he did not read a charming poem written for the occasion. He did it this time, and it was up to standard: dainty, happy, choicely phrased, and as good to listen to as music, and sounding exactly as if it was pouring unprepared out of heart and brain. Willie Winter was a(n) _____ poet.

Read the text and answer the question.

Coronaviruses were discovered in the 1960s. They are a group of viruses that cause diseases in mammals and birds. In humans, coronaviruses cause respiratory tract infections that are typically mild, such as the common cold.

The name "coronavirus" is derived from the Latin corona, meaning crown or halo. The name refers to the characteristic appearance of the infective form of the virus, which is reminiscent of a crown or a solar corona.

Question :

What is coronavirus?

Read the text and answer the question.

At the end of 2019, a new type of coronavirus started spreading in China. This type of coronavirus is often called 2019-nCoV, novel coronavirus, or COVID-19. It is believed that the virus was transmitted from animals to humans. Some of the first cases were diagnosed in people who had visited a market selling live seafood and animals. Unfortunately, when viruses are transmitted from animals to people, it can take scientists a lot of time before they can develop a vaccine or medicines to cure it.

Question :

What is the source of the coronavirus?

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Some of the symptoms of the coronavirus are fever, cough, runny nose, sore throat, headache, and trouble breathing. These symptoms are very much like those people have with a cold or the flu. The virus can be more serious in some people, especially if they are sick or have health problems.

Question :

Which one is not the symptoms of coronavirus

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While it is early to have a definite picture of the disease because scientists are still collecting the data, some patterns have already emerged. Some early reports reveal that children seem to be getting coronavirus at much lower rates than adults. Even if they get infected, the symptoms are milder. However, most people who get severely infected are those with a weak immune system, like the elderly. Coronavirus may be life-threatening for these people. They may develop more serious respiratory tract illnesses that may be fatal.

Question :

Arrange the person from low to high risk that will infected badly by the coronavirus.

Read the text below and answer

The virus appears to spread mainly from person to person. The transmission occurs when someone comes into contact with an infected person. For example, a cough, sneeze or handshake could cause transmission. The spread may also be caused by coming into contact with something an infected person has touched and then touching your mouth, nose or eyes.

Question :

How does the virus spread?

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There is no specific vaccine or medication to cure the disease, but generally, symptoms will go away on their own. However, experts recommend seeking medical care early if symptoms feel worse than a standard cold. Doctors can relieve symptoms by prescribing pain or fever medication. As far as antibiotics are concerned, they are useless to treat coronavirus.

Question :

How can we cure the disease?

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People who think they may have been exposed to the virus should contact their healthcare provider immediately. A set of preventive measures are usually followed in case someone gets infected. This includes keeping infected people in quarantine for a certain period, generally fourteen days.

Question :

How long infected people must be in quarantine?

Read the text and answer the question

To protect yourself from the virus, here are six recommendations to follow:

• Avoid contact with people who are already infected. \
• Wash your hands well and regularly for at least 20 seconds with soap and water or use hand sanitizer.
• Avoid touching your eyes, nose, and mouth if you haven't washed your hands.
• Clean and disinfect surfaces and objects that people touch a lot.
• Stay home when you are sick.
• Cover your cough or sneeze with a tissue, then throw the tissue in the trash.

Question :

What is the word that can best be replace with avoid?