Together, they cover 75% of our Earth.

It is divided into five different parts: the Pacific, Atlantic, Indian, Antarctic and Arctic Oceans.

Today’s scientists have overcome many of the challenges of the depth by using more sophisticated tools.

Today’s scientists have overcome many of the challenges of the depth by using more sophisticated tools

Select the synonym of the following bold and underlined word in each sentence in the unit

Can you name the sea animal in each picture?

Choose the word whose underlined part has a different pronunciation from the others in each group

Choose the word whose main stress is placed differently from the others in each group

Choose the word whose main stress is placed differently from the others in each group

Choose the word whose underlined part has a different pronunciation from the others in each group

Choose the word whose underlined part has a different pronunciation from the others in each group

Choose the word whose underlined part has a different pronunciation from the others in each group

Choose the word whose underlined part has a different pronunciation from the others in each group

Choose the word whose main stress is placed differently from the others in each group

Choose the word whose main stress is placed differently from the others in each group

Choose the word whose main stress is placed differently from the others in each group