Deep-Sea Mining and Polymetallic Nodules

What are polymetallic nodules primarily composed of?

• Gold and silver

• Cobalt, copper, and nickel

• Zinc and lead

• Iron and aluminum

Why are metals like cobalt, copper, and nickel important in modern technology?

• They are crucial for batteries and electronic devices.

• They are used in food packaging.

• They are essential for making jewelry.

• They are used in construction materials.

How do polymetallic nodules grow?

• Through coral reef formation

• Through accumulation of metallic compounds over millions of years

• By volcanic activity

• By rapid sedimentation

What is the estimated growth rate of polymetallic nodules?

• 1 centimeter per year

• 1 centimeter every million years

• 10 centimeters per decade

• 5 centimeters per century

What is one of the main challenges of harvesting polymetallic nodules?

• Lack of international regulations

• Lack of interest from companies

• High pressure deep in the ocean

• Insufficient technology for onshore mining

Who regulates deep-sea mining activities?

• United Nations Environment Programme

• International Maritime Organization

• World Trade Organization

• International Seabed Authority

What is a major environmental concern associated with deep-sea mining?

• Air pollution

• Noise pollution

• Deforestation

• Destruction of marine ecosystems

Which country is NOT mentioned as a holder of a deep-sea mining license?

• India

• South Korea

• Brazil

• Poland

What is a potential benefit of deep-sea mining compared to onshore mining?

• Higher quality of metals

• No need for cutting down forests

• Faster extraction process

• Lower cost of extraction

What is one proposed alternative to deep-sea mining for obtaining metals?

• Increasing metal imports

• Recycling existing materials

• Developing new mining sites on land

• Using synthetic metals