What was this place like when the shark was alive?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

If a solution had a ph of 7 what is the solution

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.