What makes radiant energy different from other forms of energy? a. it can travel through space. b. it is transferred by air circulation. c. it requires contact to transfer heat. d. it flows from a cooler object to a warmer object.

the answer is A

Explanation:

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

if you mean hydrogen and oxygen then water is the product