What is one disadvantage of using nuclear fission to produce electricity? A. It is difficult to store and dispose of radioactive wastes.
O
B. It has a limited supply of fuel.
c. It requires very high temperatures and pressures.
O D. It produces only a small amount of energy.

the temperature of the gas, in k, not celsius.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.