Which of the chemicals in the following chemical reaction is the acid? HCO3- + H20 -->CO3^2- +H30+

A.) HCO3-
B.) co3²-
C.) H30+
D.) H20

How does the principle of electromagnetism explain the interaction between earth’s magnetic field and the solar wind?

Which of the following are sources of revenue for media companies? a. direct sales to producers b. advertising and subscriptions c. online purchase d. capital investments

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.