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.

Choose the correct answer to complete the sentence. "Having seen people suffer global warming consequences, people decided________ carbon footprints."

If it is kept dry, a seed can still sprout up to forty years after their formation

Choose the best option:

She is a famous ___. She tries her best to protect rare animals from extinction.

Some of the stiffest competitions the jackals face on the plains of Africa comes from vultures

According to most psychological studies, body language expresses a speaker’s emotions and attitudes, and it also tends to affect the emotions and attitudes of the listen.

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

Choose the correct answer to complete the sentence. "Climate change leads _____ numerous catastrophic consequences"

Air pollution, together with littering, are causing many problems in our large, industrial cities today.

It’s been brought to my attention that there has been a number of thefts from the office.

Water , ice, and snow play a role in affecting an Earth’s rotation

In that age of computers, it is difficult to imagine how tedious the work of accountants and clerks must have been in the past.

Numerous types of cells, such as skin cells and white blood cells, have the power reproduce asexually.

The amount of books in the Library of Congress is more than 58 million volumes

After driving a car for ten miles, John suddenly realized that he has been driving in the wrong direction

The government’s budget maybe considered balanced when the amount of money it spends does not exceed the amount it receives.

What exactly is the influence of air pollution ...... human beings?

The most substances expand in volume when they are heated

I wish you ______________ making that noise. It's bothering me. 

Many poets enhance their work by creating a contrast among realism and symbolism in a given poem

There is the very real possibility that these animals could panic, frighten and would break away, should there be a sudden loud noise