Why does some kind of matter like potassium permanganate dissolve into other kind of matter whereas other kind of matter like wood doesn't dissolve ?

potassium permanganate dissolve because of the polarity of the water molecules which make it a good solvent for the elements that form ions 
although for the wood which is an organic molecule which doesn't have an atomic charge what so ever it ca't take advantage of that polarity but it can be dissolved with organic solvants

Well, currently CO2 levels have been increased. The concentration of this gas has not stopped increasing since the beginning of the sixties, when the records of this gas began to be made.

Explanation:

The atmospheric concentration of CO2 has reached 415 parts per million, passing the 400 barrier, which was exceeded in 2015, the crucial year where the Paris Agreement was signed. This agreement seeks to reduce greenhouse gases whose purpose is to avoid an increase in temperature. The current concentration of carbon dioxide is 145% of the industrial levels, very high levels in the atmosphere for this gas.