How many energy levels does period 5 and period 6 have?

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.

The compound formed from 2 atoms of hydrogen and one atom of oxygen is

Alithium atom has three protons, three neutrons, and three electrons. what is the overall charge on this atom?