The function of pain is to warn the individual of danger, so he can take action to avoid more serious damage

Ocean currents that help transfer heat from the equator to the poles, thereby creating a more balanced global environment.

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

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

Nylon, a synthetic done from a combination of water, air and a by product a coal, was first introduced in 1938

Some of plants in this store require very little care, but this one needs much more sunlight than those 

Mr Ross, our old history teacher ruled his classes by a rod of iron!

A coral reef, a intricate aquatic community of plants and animals, is found only in warm, shallow, sunlight seas

Many people have stopped to smoke because they are afraid that it may be harmful to their health.

An escalator is a moving stairway that transporting people from one point to another by means of linked threads

My father doesn’t know speak English.

Most sand dunes are always in motion as wind pushes sand upward one side of each dune, over the top, and down the other side.

There always is one wise woman who is both feared and respected by her people

Nobody bothered with telling me that the school had decided to have a special holiday on Friday

Are there enough champagne to go round ? Will everybody get a glass?

The panda's ...... habitat is the bamboo forest.

Research has proved that a baby can distinguish its mother’s voice the moment he is born.

The oxygen in the air we breathe has no tasted, smell, and color.

The most of the energy used in our homes and factories is generated from coal, oil and natural gas

If you ____ Mary by chance, please give her my phone number. 

Several comet are discovered each year, but very few of them are bright enough to be seen without the aid of magnification