Correct Option
Biorock technology, also known as mineral accretion technology, is primarily employed for the restoration of damaged coral reefs. This method involves submerging a metal structure in seawater and passing a low-voltage electrical current through it. This process causes dissolved minerals, such as calcium carbonate and magnesium hydroxide, to precipitate and accumulate on the structure, forming a substrate similar to natural limestone. Coral fragments transplanted onto these Biorock structures exhibit accelerated growth rates and enhanced resilience against environmental stressors like ocean acidification, rising sea temperatures, and pollution, thereby aiding in the recovery of degraded reef ecosystems.
Incorrect Options
- Option 2 refers to the development of sustainable construction materials, often termed biocomposites or green building materials, which utilize agricultural waste or plant residues. This is distinct from Biorock technology, which focuses on marine ecosystem restoration.
- Option 3 pertains to geological and geophysical survey methods, such as seismic imaging or electromagnetic surveys, used to identify potential reserves of unconventional hydrocarbons like shale gas. This field is unrelated to Biorock technology.
- Option 4 describes the practice of providing mineral supplements, typically blocks of salt, for wild animals in forests or protected areas to ensure their nutritional requirements are met. This practice is unrelated to marine conservation or Biorock technology.