The sum of all chemical reactions in organism’s living cells are called its metabolism

If the Oxygen supply in the atmosphere was not replenished plants, it would be exhausted

The results of our marketing survey show that there will be quite a demand for electric cars in ahead years.

Because studies have shown that obesity can cause a type of diabetes, doctors usually put his diabetic patients on special diet.

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

Until Hollywood invented him, Leonardo DiCaprio was practically unknown

Cosmic distance is measured on light -years.

Most countries depend to few extent on cereal imports to augment their own crops

The average temperatur Mars, the fourth planet from the Sun, is about eighty degrees than colder on Earth

He rarely goes to the market, ______?

After working hard for so long, we decided to enjoy ourself to  nice long holiday

The average cat sleeps sixteen hours for a day short intervals called ‘cat naps.

___________in 2001 that the World Trade Center was destroyed.

The Vermont Elememary Science Project, according to its founders, are designed to challenge some of most widely held beliefs about teaching.

The authorities are worried the increase of drug abuse.

It would be both noticed and appreciating if you could finish work before you leave

During speech in Congress, the President stressed the importance of good education for the well-being of generation come

We have rented two videos and watched them with some friends last night.

After the team of geologists had drawn diagrams in their notebooks and wrote explanations of the formations which they had observed, they turned to camp-side to compare notes

Until recently, photocopy machines were regarded strict as business and professional office equipment that required  lot of expensive service.

Ancient people used pot cooking, storing food, and carrying things from place to place