Read the passage and choose the correct answer
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Đọc ảnh ra văn bản:
"The ocean covers 70 percent of Earth's surface and makes life on Earth possible, and makes life on Earth possible for thousands of years. People have depended on the ocean as a source of food. Fishers have caught more than 90 million tons of seafood each year. Millions of fishermen, boat owners, and boat builders depend on fisheries for their life. People also use the ocean as a route for trade, shipping, and travel. Ocean ports are meeting points of people of different professions: dockworkers, who load and unload cargo, and ships and immigrants with a wide variety of nationalities, languages, and religions. The busiest ports in the world are Rotterdam in the Netherlands."
Đọc ảnh ra văn bản:
"The ocean covers 70 percent of Earth's surface and makes life on Earth possible, and makes life on Earth possible for thousands of years. People have depended on the ocean as a source of food. Fishers have caught more than 90 million tons of seafood each year. Millions of fishermen, boat owners, and boat builders depend on fisheries for their life. People also use the ocean as a route for trade, shipping, and travel. Ocean ports are meeting points of people of different professions: dockworkers, who load and unload cargo, and ships and immigrants with a wide variety of nationalities, languages, and religions. The busiest ports in the world are Rotterdam in the Netherlands."