Scientists can use the color of minerals to tell them apart.
Idiochromatic minerals <em>(self-colored) </em>due to their composition. The color is constant and predictable.
Allochromatic minerals <em>(other colored) </em>due to trace impurities or defects in their structure. The color is variable and unpredictable.
Pseudochromatic minerals <em>(false colored)</em> due to effects produced by light. The color is variable but a unique property of the mineral.
We use more freshwater to provide us with Electricity.
Freshwater is one of the most used natural source for us to generate electricity.
We do this by placing a magnetic turbin in a place where the freshwater have strong current (such as under the waterfall). The force from the current would cause the rotation of the turbin and produce electricity
It drafted a new constitution and served as the governing body.
Hope this helps.
I am pretty sure that the answer is C