Calculate the number of molecules in 8.4 g of naoh

What produces wave a)sound b) heats c)transfer of energy d)vibrations

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.

What is the name of the enzyme that forms at the start of transcription?