What type of energy conversion takes place in a voltaic cell? a) chemical energy is spontaneously converted to electrical energy. b) chemical energy is converted to electrical energy only when there is an external power source. c) electrical energy is spontaneously converted to chemical energy. d)electrical energy is converted to chemical energy only when there is an external power source.

Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

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.