Among the parameters that determine whether an environment is suitably for life as we know temperature, water availability, and oxygen content

Being he biggest expanse of brackish water in the world, the Baltic Sea is one of pecial interesting to scientists.

Monkeys use their foot to eat food, to gesture, and to climb.

Allen’s not having finished his thesis did not discourag from applying for other degree program.

This bird’s tail is double as long as its body.

Compact discs, which appeared on the market in the early 1980s, produce sound better quality than those of Standard phonograph records.

They agreed with waiting for me if I was lately

I have gone to Copenhagen three times this year, I still want to spend holiday there.

It’s time you went home, but I’d rather you stay here.

The ozone layer must be protected because it shields the Earth from excessive raviolet radiations .

The sun contains 99.9 percenta of the mass of solar system

In the 1970’s consumer activities succeeded in promoting laws that set safety standards for automobiles, children’s clothing, and widely range household products.

The Library of Congress, located the nation’s capital, houses history documents and photographs as well as most boo published

Some bacteria are extremely harmful, but anothers regularly used in producing cheeses, crackers, and many other foods.

Those of us who have a family history of heart disease should make yearl appointments with their doctors

Vitamin E, which is found in nutritious foods such as green vegetables and whole grains, action an antioxidant in cell membranes 

It was her who suggested that he should go to New York in order to get direct flight.

What we know about certain diseases are still not sufficient to prevent them from spreading easy among the population

There has been widespread (public opposition against the plan for new road

There is the very real possibility that these animals could panic, frighten and would break away, should there a sudden loud no

Keep trying to learn English. Don’t give up. Eventuall, you will succeed, even though you may not know how much time it cost