q1.In this graph, the red bars correspond to the estimated number of years that these metals will remain economically recoverable, at current prices, given known global reserves, and assuming current rates of consumption. The entirebar in each case (red plus orange) shows the estimated number of years that these metals will available using current technology on all known deposits, even those that are not currently economically exploitable.

Use the graph to answer the following question.

Assuming today's rate of consumption and no new discoveries, the price of which metal from those listed below is likely to increase most (in percentage of current value) in the next 25 years?

q2.In this graph, the red bars correspond to the estimated number of years that these metals will remain economically recoverable, at current prices, given known global reserves, and assuming current rates of consumption. The entirebar in each case (red plus orange) shows the estimated number of years that these metals will available using current technology on all known deposits, even those that are not currently economically exploitable.

Use the graph to answer the following question.

Considering nickel, which one of the following would be most likely to cause the length of the red bar to increase, without increasing the length of the orange part of the bar? (In other words, what would lead to an increase in economically recoverable deposits, without increasing the known deposits as a whole?)

Nickel Molybdenum Iron from ore Zinc Copper Cobalt Titanium Lead 0O 50 100 150 200 250 300 350 400 Years left available, at present rates of consumption . zinc ~ iron from ore | copper ~ cobalt ~ titanium Nickel Molybdenum Iron from ore Zinc Copper Cobalt Titanium Lead 0O 50 100 150 200 250 300 350 400 Years left available, at present rates of consumption the discovery of a new, particularly rich (high-grade) deposit of nickel close to the location of a nickel refinery ' the development of a new, more efficient technology for extracting nickel from lower-grade ore a dramatic decrease in the price of nickel None of the above would be likely to cause the length of the red bar - the remaining years of economically recoverable nickel - to increase, without changing the known deposits overall. All of the above would likely cause the length of the red bar - the remaining years of economically recoverable nickel - to increase, without changing the known deposits overall