What must be true for a spontaneous reaction in an electrochemical cell? the overall cell potential must be positive. the overall cell potential must be negative. the cathode’s standard reduction potential must be positive. the cathode’s standard reduction potential must be negative.

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.