Before his death, John Dewey saw his philosophy have a profound influences on education and thought in the United States and elsewhere

Choose the correct answer to complete the sentence. "With clear evidence, his company couldn't deny having _____ a large quantity of toxins into the sea."

Jack London, whom was known for his stories of Alaska, lived there during the Klondike gold rush.

Million of people lost their jobs in the 90’s. This, in turn, caused social dissatisfaction with the political leaders who had promised jobs and prosperity.

If people stop destroying animal's natural habitat, more species will survive and produce .......

Since the average age of families has fallen, therefore more and more women have been able to join the labor force

When my lost briefcase was returned with my year-long research results intact, I felt tremendously relieved. It was as if a huge heavy weight ______________ from my shoulders. 

Scuba diving is usually carried out in the ocean in that people can explore the underwater world.

Humus is formed during soil microorganisms decompose animal and plant material into usable elements by plants 

By studying the fossils of pollen, which extremely resistant to decay, researchers can gain useful information about the vegetation of the past

After searching for evidence in the house, the police concluded that the thief must have come in through the window and stole the property while the family was asleep.

Nitrogen must be combine with another element such as Hydrogen or Oxygen to be useful in agriculture or industry.

The pace of living is too fast for me in this town. I need to move to a village, where everything happens more slower.

The native people of the Americans are called Indians because when Columbus landed in the Bahamas in 1492 , he thought that he has reached the East Indies.

The society was set up to ...... endangered species from extinction.

Dinosaurs are traditionally classified as cold-blooded reptiles, but recent evidence based on eating habits, posture, and skeletal structural suggests some may have been warm-blooded.

Inventing by Roger Bacon, the magnifying glass led to the creation of other scientific tools which have produced immeasurable scientific progress.

The company suffered substantial losses after the stock market crash and found it difficult for recovering.

Choose the correct answer to complete the sentence. "In the past, a lot of countries ______ having contributed to global warming"

To help policy makers and another, the government spends as much as $1.4 million a year in collecting statistics.

The author has not rarely written anything that was not a best-seller.