Claire made the diagram above to show how the puddle she saw on the way to school disappeared by the end of the day. She wanted to show her idea that heat from the sun caused the water to evaporate into the air. However, Claire's
diagram is incomplete.
Think about what's missing. What would you add to the diagram to better show Claire's idea?
Amplify science

the answer is 1 i believe

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.