When we eat food our bodies use the stored energy found in the food and convert it. Which of the following best describes this conversion?
DI
ts
mechanical --> thermal
chemical --> thermal & mechanical
electromagnetic --> nuclear
thermal --> electric

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.