The answer is b I believe so
<span>Ore deposits of the element Aluminium do not require extreme concentrations because it is one of the most abundant elements in the earth's crust.
</span><span>Aluminium is the most common metal in the </span><span>Earth's crust.
</span>However aluminium can not be found free stand alone. All of the earth's aluminum<span> is combined with other elements to form compounds.</span>
Wind energy is inexhaustible (it will never be used up.)
One similarity thing between the both is that they both lowered the population of Europe.
Hope this helped. Have a great day! :D
