Question

3) Abundance of minerals in oceans​

Answer 1

Explanation:

Oceans cover 70 percent of Earth's surface, host a vast variety of geological processes responsible for the formation and concentration of mineral resources, and are the ultimate repository of many materials eroded or dissolved from the land surface. Hence, oceans contain vast quantities of materials that presently serve as major resources for humans.

Today, direct extraction of resources is limited to salt; magnesium; placer gold, tin, titanium, and diamonds; and fresh water.

Ancient ocean deposits of sediments and evaporites now located on land were originally deposited under marine conditions. These deposits are being exploited on a very large scale and in preference to modern marine resources because of the easier accessibility and lower cost of terrestrial

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Answer 2

Oceans hold an abundance of minerals, including nickel, iron, cobalt, etc.

Explanation:

• Despite providing fishes and shellfish, oceans hold minerals like crude oil, nickel, iron, cobalt, and copper.
• Humans began mining in the ocean floor for metal ores like manganese nodules, diamonds, which began in the 1950s and 1960s.
• Deepwater drilling use to take out crude oil from ocean deep.

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