Temperature, viscosity, and amount of dissolved gases
The aquifer which will be most effective in purifying polluted ground water is AN AQUIFER COMPOSED MAINLY OF SAND.
An aquifer refers to a zone of permeable rock strata which transmit ground water freely. An aquifer must be permeable and porous. Ground water can be extracted from an aquifer by using a water well.
Okay, I googled it because I wasn’t sure but, according to the article *ahem* “Destructive as forest fires may seem, forests often regrow in their wake. In some cases, however, forest fires become so intense they cause severe damage to the soil that may take years or even decades to repair”.
Hope this helped!
The answer is a. no controls