At present almost all the metals and industrial minerals utilized to manufacture consumer goods and machinery are extracted from onshore resources. In an effort to become independent of imports and safeguard themselves from future supply shortages, some countries are contemplating mining such resources from the ocean. But underwater mining is still too expensive and there is uncertainty about its environmental impact.
Manganese nodule treasures
> Many thousands of square kilometres of the deep-sea floor are covered by metal-bearing nodules. They contain primarily manganese, but also nickel, cobalt and copper, which makes them economically promising. Although many countries and companies are already intensively investigating their distribution, it is not certain whether the manganese nodules will ever be mined. After all, at least for the intermediate future, there are enough metals available on land.
Metal-rich crusts
> Cobalt crusts are a promising resource on the sea floor because they contain large amounts of cobalt, nickel, manganese and other metals that could exceed the content in land deposits. They form on the rocky surfaces of undersea rises. For their extraction, machines are required that can separate the material from the substrate. To date, however, only conceptual studies exis
manganese , calcium , Salt 3 mineral resources can be harvested from the ocean
Answer:
<u>C. The coastlines of South America and Africa were similar in shape, suggesting that they shared a common tectonic plate.</u>
Explanation:
- As suggested by the Alfred Wegener, the plates of the South America and the African plants had a similar geologic history and thus shared a common tectonic boundary and hence validate the proof of the superclass and the drifting of the plates at various time zones.
- Thus after the 1960s the plate tectonic theory came into the limelight and was heavily recognized to be fit the works of the drifting of the continental landmasses.
The appropriate response is hydrogen bonds. Fever is an adjust of gainful and destructive impacts. High fevers can have a tendency to skew the adjust toward the destructive.
The reality of the matter is that protein optional structure (generally hydrogen bonds) start to denature when moving toward 41 degC (106 degF), however energy likewise change. Energy is a quite major ordeal, even a little temperature move can altogether affect the speed of a response or connection.
<span>They end up in bodies of water killing animal and plant life.
=> Not all insecticides are being dissolve. When it stays long in the lawn, rain will carry it and will mix with the body of water. Then the plants will absorb the water and causes the plant to die. Same goes with the animal if they drink the water with pesticides.</span>
Answer:If the enzyme changes shape, the active site may no longer bind to the appropriate substrate and the rate of reaction will decrease. Dramatic changes to the temperature and pH will eventually cause enzymes to denature.
Explanation:
