Magic With Acid

In science we did a couple of cool experiments relating to acids and bases, crystals, deadly rain, you know the fun stuff.
We first did the making of copper sulfate crystals by dissolving copper oxide in hot sulfuric acid, pouring the mixture through filter paper into a beaker, and then putting it in a evaporating basin above a beaker containing boiling water to let it evaporate a bit. The next day we came back and some crystals had grown:

The dark blue things are the crystals.
Then afterwards we looked at the formation of acidic water from the burning of nasty fuels, fuels which have harmful fumes that float into the sky. When the fumes get high enough they will follow the condensation and precipitation steps of the water cycle. The rains acid increases the amount of acid in the rivers and oceans and with a high number of hydrogen ions from it dissolving steal away nutrients and break down pieces of the ocean. It must be a shame to know that all this happened because of humans like you and me conveniencing ourselves.