Kalle framställde en lösning genom att leda ner gas i destillerat vatten. Därefter mätte han lösningens pH, som var 1,5. Ge exempel på olika gaser som Kalle kan ha använt.

The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.