<h2>
Answer:</h2>
<h2>Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that, through cellular respiration, can later be released to fuel the organism's metabolic activities</h2>
<h2>MaRk mE aS braiNliest ❤️</h2>
The diagram represents a chain reaction that is caused by nuclear fission.
<h3>What is a nuclear fission reaction?</h3>
A nuclear fission reaction is a reaction in which the nucleus of a larger atom is split into two or more smaller nucleus of atoms.
Nuclear fission can proceed in the form of a chain reaction in which the products of the first fission reaction are used to initiate further fission reactions.
Therefore, the diagram represents a chain reaction that is caused by nuclear fission.
Learn more about nuclear fission at: brainly.com/question/22155336
#SPJ1
B.Speed of light
The speed of light is used as a reference and is 3x10^8 m/s no matter what.
Hope this helps :)