CATDOLL : CATDOLL: What is seaweed?

1. What is laver?

Seaweed is now cultivated artificially

2. The Ocean is the Breadbasket of the Future

① Population growth and resource shortage are one of the most serious environmental problems facing mankind today. Obviously, whether this problem can be properly solved is directly related to the future survival of mankind.

②One of the manifestations of resource shortage is the lack of arable land resources, and the growth of food production cannot keep up with the growth of population. It is for this reason that many people have warned that the earth will not be able to feed more than 10 billion people. However, some optimistic people oppose this alarmist statement. They believe that although the development of arable land on land has reached its limit, there are still vast oceans on the earth that can be developed, and the ocean is entirely likely to become the future granary of mankind.

③ Of course, what the ocean can provide us is not food in the traditional sense, such as rice, wheat and corn, but food in a broad sense, other foods that can meet human nutritional needs. Some oceanographers point out that the annual growth of seaweeds that grow naturally in offshore waters alone is equivalent to 15 times the current annual output of wheat in the world. If these algae are processed into food, they can provide humans with enough protein.

④In fact, we are not unfamiliar with algae as food. Just in the coastal areas of my country, the edible algae that people are more familiar with include: brown algae such as kelp, wakame, seaweed, and sargassum; red algae such as laver, partridge grass, and agar; green algae such as Ulva and Enteromorpha. Their production is increasing under careful artificial cultivation. Among them, the annual production of kelp alone is more than 2,000 times higher than that in the wild earlier, which shows how huge the potential for increasing production is! Abroad, people have also cultivated a new variety of algae. It is said that this algae produced on 1 hectare of water surface can obtain 20 tons of protein, multiple vitamins and minerals required by the human body after processing. This is equivalent to the same nutrients that soybeans produced on 40 hectares of land can provide.

⑤ In addition to seaweed, there are also abundant plankton in the ocean that are invisible to the naked eye. Someone has calculated that if they can be caught and processed into food, they can meet the needs of 30 billion people. Of course, the premise is that the ecological balance will not be destroyed.

⑥ As for the numerous fish and shrimp in the ocean, they are even more familiar foods. Although the fishing of fish and shrimp in the near sea is close to the limit, we can still open up offshore fishing grounds and develop deep-sea fisheries. For example, the annual output of Antarctic krill can reach 5 billion tons. If we only catch 100 million to 150 million tons of them, it will be more than 1 times the annual fishing volume of the world today. Moreover, there are still many marine organisms in the deep sea and the open ocean that have not yet been fully developed and utilized by us. Their huge potential is self-evident.

⑦To sum up, it is no exaggeration to say that the ocean is the granary of mankind's future.

1. No, because one of them is one of them. If it is removed, it will become "This is the most serious environment facing mankind", which is too absolute and inconsistent with the original meaning. It cannot reflect the accuracy of the language of the expository text. 3 points

2. First, there are abundant algae in the ocean. The annual growth of algae in coastal waters is equivalent to 15 times the current annual output of wheat in the world (or "the current annual output of artificially cultivated kelp has increased by more than 2,000 times compared with the previous wild state"; "the new variety of algae produced on 1 hectare of water surface is equivalent to the nutrients of soybeans produced on 40 hectares of land."); second, there are abundant plankton in the ocean that is invisible to the naked eye. If processed into food, it can meet the needs of 30 billion people; third, there are many fish and shrimp in the ocean. The annual output of krill in Antarctica alone is as high as 5 billion tons. As long as 100 million to 150 million tons of them are captured, it will be more than 1 times the annual fishing volume of the world at that time; fourth, compared with offshore resources, there are many marine organisms in the deep sea and the open ocean that have great potential and have not yet been fully developed and utilized. (2 points for each aspect. 1 point for answering only the resource type, 1 point for appropriate comparison and explanation, and the meaning is correct)

3. Give examples; list numbers; make comparisons, and explain specifically and accurately that Antarctic krill has a high yield.

4. There is no unified answer for this question. Scoring points: ① Marine resources are extremely rich and are also the hope for human survival in the future. (2 points) ② Cherish marine resources, enhance awareness of protecting marine resources, improve and perfect laws and regulations, and strengthen law enforcement (2 points) (the meaning is correct)

3. What to eat to get thyroid hormone

Seaweed: kelp, laver. It is best to buy laver that you can process at home. Most of the ready-made laver bought in supermarkets are artificially raised and not that good. Also, you should eat it in moderation, otherwise you may get goiter. The above suggestions are from my biology textbook.

4. Understand the Import and Export of Laver

The whole sheet of seaweed used in the kimbap in the supermarket is usually roasted kimbap, which is also known as seaweed.