A) has been b) was c) is

Since the late 1980s, there __________ a concerted effort to maintain global commercial harvest of ocean fish at approximately 100 million metric tons.

Choose the right form of the verb and translate the sentences.

A) reporting b) reported c) being reported

A) occupying b) occupied c) being occupied

A) gathering b) gathered c) being gathered

Fish and shell-fish are the major food item _________ by human beings from wild populations.

A) practicing b) practiced c) being practiced

A) making b) made c) being made

Ingredients ______from soybeans, corn, canola, wheat, legumes, peanuts, and barley, as well as the by-products of the brewing industries and animal packing operations, are needed.

Choose the right variant of Participle and translate the sentences

A) must b) can c) might

Experience has shown that some species become threatened and that the shifting species mix ______ have adverse effects on the ecosystem.

A) should b) could c) may

Efforts _______ be made to upgrade the aquaculture feed manufacturing sector, through the use of improved processing methods and increase the use of locally available feed ingredient sources

A) must b) should c) could

There are still controversial issues that ______ be addressed in relation to biological diversity in aquaculture, such as the use of introduced species and genetically improved species.

A) can b) must c) should

Genetic improvement programs ________ be applied to more and more aquatic species to develop the existing aquatic sector which is still far behind.

Choose the right modal verb and translate the sentences

The most production of aquaculture industry is for nonfood use.

Aquaculture has been practiced since last century.

Nowadays the most part of the U.S. supply of Atlantic salmon is not cultured.

Read the text again and answer the questions

1. What is aquaculture?

2. What is the role of aquaculture in fishing industry?

3. How well is aquaculture developed in the world?

Are these sentences true or false?

5. Market-based regulation _______ both reduce overfishing pressures and ensure the overall efficiency of the industry.

a) may b) can c) must

2. Aquaculture has a long history, but for much of the world it remains somewhat of a novelty, _________less than agriculture or capture fisheries.

4. Aquaculture is also practiced as polyculture, where a variety of species ______ different ecological niches are cultivated together.

5. The _______ data suggest that over 90% of mariculture production was aquatic plants and filter-feeding invertebrates, 8% mainly carnivorous finfish species and 1% crustaceans.

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