The answer to your question will be B. The higher our current rate of consumption, the less coal will be available in the future.
Answer:
There is a simple algebraic formula relating turbidity to optical properties. You do not need Mie theory. It is given in van de Hulst "Light scattering from small particles" (a nice cheap reprint from Dover Press). More easily accessible are any of the Mie calculators avaiable on the Internet, say Miecalc, these will give the exact result.
I think the answer would be A , break the darkness period with a flash of light for some time so that the plants can bloom all year round.
Weaker gel concentration could make the lines on the graphs closer together
