Japan to Pioneer Deep-Sea Mining of Rare Earths, Boosting Resource Security

Answer: B

Statement 1 is correct. Rare Earth Elements are vital components in high-tech industries, including electric vehicles, renewable energy technologies (like wind turbines), and defense systems. Statement 2 is correct. The term 'rare earth' is a misnomer; these elements are not particularly rare in the Earth's crust. However, they are rarely found in economically exploitable concentrations and are chemically very similar, making their separation and processing complex and costly. Statement 3 is incorrect. Polymetallic nodules are primarily rich in manganese, nickel, cobalt, and copper. While some REEs can be present, deep-sea rare earth mining typically targets 'rare earth muds' or ferromanganese crusts, which have different compositions and formation processes than polymetallic nodules.

Answer: C

Statement 1 is correct. The ISA was indeed established by UNCLOS to organize and control mineral-related activities in the international seabed area (the Area) for the benefit of humankind. Statement 2 is incorrect. The principle of 'Common Heritage of Mankind' applies specifically to the seabed and ocean floor and subsoil thereof, beyond the limits of national jurisdiction (known as 'the Area'). It does not apply to resources within a nation's Exclusive Economic Zone (EEZ), which are under the sovereign rights of the coastal state. Statement 3 is correct. Within its EEZ, a coastal state has sovereign rights for the purpose of exploring and exploiting, conserving and managing the natural resources, whether living or non-living, of the waters superjacent to the seabed and of the seabed and its subsoil. These activities are governed by the domestic laws of that state, consistent with UNCLOS and other international law principles.

Answer: C

Statement 1 is correct. Deep-sea hydrothermal vents and cold seeps are unique environments that support diverse and often endemic species, relying on chemosynthesis rather than photosynthesis. These ecosystems are highly sensitive to physical disruption. Statement 2 is correct. Sediment plumes generated by mining equipment can spread over vast areas, suffocating filter feeders, reducing water quality, and impacting light-dependent organisms in shallower waters, though deep-sea ecosystems are mostly aphotic. Statement 3 is incorrect. Deep-sea ecosystems are characterized by extreme conditions (high pressure, low temperature, lack of light, limited food), leading to very slow growth rates, long lifespans, and low reproductive rates for many species. Consequently, the recovery of disturbed deep-sea habitats and populations is expected to be extremely slow, potentially taking decades to centuries, or may not occur at all.