Because of it consists only of a relatively short strand of DNA protected by a shell of Protein, a virus cannot eat or reproduce by it self.

Alcoholic beverages vary widely in content, ranging from only 2 or 3 percent for some light beers to as high to 60 percent for some vodkas and brandies

Nomadic hunter and gatherer societies have access to only a limited amount of food in an area and moved on when they have exhausted each locality.

A computer networks usually includes either selected employees of a particular business or or people who do not work together but have similar interests.

The decade of the 1920’s was significant in Georgia’s history because of the rapidity with what agriculture declined in the state.

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

Many heavy work that was once done by hand can now be done more easily with the help of compressed air.

New uses for plastics were found during the 1950’s and 1960’s in medicine, space, research, industrial, and architecture.

The evolution of fishes is a history of constant adaptation to new possibilities, and a refined of these adaptations.

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

The biologist found some pollutants, a little of which can be considered very harmful to fish and other living organisms in the river.

The cars in garage were badly in need of to be repaired.

The number of teaching assistants required meeting undergraduate course needs is rapidly increasing.

Indiscriminately dumping of waste material and inadequate sewage treatment are two serious causes of environmental pollution.

We are not allowed to enter this construction site. A block of flats is being built here and it is dangerous to walk because you may get hurt by a fallen brick or some other objects

After Allan had searched for twenty minutes, he realized that his jacket had been laying on the table the entire time .

My mother doesn’t care how much does the washing machine cost because she is going to buy it anyway

Choose the correct answer to complete the sentence. "Deforestation is one of the biggest environmental______ the ecological balance in the world"

“I’m not staying any longer.” “I wish you ____.” 

Electric motors range in size from the tiny mechanisms that operate sewing machine to the great engines in heavy locomotives.

According to many educators  television should not become a replacement for good teachers, and neither are computers.