Many animal species are totally colors blind, but the condition is very rare humans.

Find out error in each sentence: The more we work together, the best we understand each other.

This library book is overdue. I  ............ better return it today.

When a simple action such as lifting one’s arm is performed, the work is divided between least three different muscle groups.

Like it or not, there is the rain and not the car that will hold the key to the future of domestic travel.

To remove stains from permanent press clothing, carefully soaking cold water before washing with a regular detergent.

Louis Braille designed a form of communication enabling people to convey and preserve their thoughts to incorporate a series of dots which were read the finger tips.

That it is believed that most of the earthquakes in the word occur near the youngest mountain ranges – the Himalayas, the Andes, and the Nevada.

“How does the human brain work?” remains one of most profound questions confront modern Science.

Hoover Dam in Nevada is a multi purpose structure that provides flood control, hydroelectric powerful , and drinking and irrigate water.

The issues learned during the early stages of the project causing researchers to initiate additional (research

………………..! Oh, dear. Didn’t you see that car coming? 

 – Liz: “Thanks for the nice gift you brought to us!”
- Jennifer: “___________”

Never put off until tomorrow what you can do today.

That the poverty action group was set up in the 1970s was a sign of public awareness during that decade.

Mobility is one of the characteristics often demanded of ecutives, and they must accustom themselves move quite regularly

Ballet performers must be believable actors and actresses as well as experts.

In some species of fish, such the three-spined stickleback, the malen, not the female, performs task of caring for young.

Choose the correct answer to complete the sentence. "California doesn't permit people to fish ______ a fishing license."

When the children realized that they were by themselves the dark, they became really frightening

When actively hunting,dolphin send out transmitting about five signals every second.