Mercury's velocity is so much greater than the Earth's that it completes more than four revolutions around the Sun in the time it takes Earth to complete one.

In literature, caricatures usually contain verbal exaggeration through which the writer achieves comic and often satiric effects.

The predominant activities in rural societies are those that involve the production of food and raw materials.

Proper exercise plays a significant role in the rehabilitation of patients with various back ailments.

Although most birds have only a negligible sense of smell, they have acute vision.

Under especially favorable conditions, conifers can grow to spectacular proportions.

Problems that are endemic to the poor countries are massive poverty, explosive population growth rate and pollution, all of which are difficult to solve.

It is a paradox that in the developed countries there is a rich man but there is still a poor man.

Procedures to eradicate animal diseases may include quarantine, immunization, and even slaughter.

The struggle between native peoples and colonial governments has been central to the politics of many Third World Countries.

A higher tax on automobiles will increase the government's revenue by millions of dollars.

Executives must have power in order to control employees who resent discipline and try to avoid doing the work.

Since Thailand uses a lot of oil each year and is not an oil producing nation, it is compelled to import a large amount of oil from abroad.

Residents in the area claimed that the smoke and smell from the factory were unpleasant and hazardous to health.

Forests are delicate systems that, if distributed, can be permanently destroyed.

Writers of mystery novels often try to fool their readers by presenting misleading clues.

The molecular and structural arrangements of the components in a composite material can vary greatly.

Some cells, such as epithelia, proliferate more rapidly when the body is asleep than when it is awake.

Such essentially different stimuli as cold, drugs, and grief can provoke identical chemical reactions in the body.