Migration of animals be initiated by physiological stimuli such as reproductive changes, external pressures such as weather changes, or combination of either types of changes.

The residence of Greenville, Texas hold an annual Cotton Jubilee remember the crop that caused their city to prosper.

Sharks can detect minute electrical discharges coming from its preis

The number of student attending English courses at my university are increasing

His roommate is not very clever student, but  he certaiy works very hard indeed 

Astronomers do not know how many galaxies there are, but it is thought that there is millions or perhap billion

Most modern barns are both insulated, ventilated and equipped by electricity

We chose (to take trip to the Far East because it was advertised adventurous and intrigued

Find mistakes and correct

The Earth was flat, was believed by most people in the fifteenth century.

In purchasing a winter coat , it is very important for trying it on with heavy clothing underneathed

In the 1800’s botanist Asa Gray work describe and classifying the plants found North America.

Measles are cured without much difficult nowaday

The skin receives nearly the third of the blood pumped out by heart.

Transfer taxes are imposed on  sell or exchange of stocks and bonds.

The world would look ___ eerie different if human eyes were sensitive to infrared radiation

Chemical compound with Barium, Cobalt, and Strontium are responsible to many of the vivid colors fireworks.

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

There is no Oxygen space to support the combustion of fuels as is there in the air on Earth.

Mosquitoes will accepts the malaria parasite at only one stage the parasite’s complex life cycle.

The Mediterranean, a large sea surrounded by land, is mile depth on the average and more than 2.000 miles length.

Each stanza of a poem ha repeatable pattern of meter and rhyme and is normally division from the following stanza by blank line.