Which branch of science provides the most proof that the earth is approximately 4.6 billion years old? justify your response in two or more complete sentences

Astronomy is a branch of science that studies the Earth and the universe.  Since the age of the Earth will be based on how it starts, or how the universe starts, astronomy surely has the most proof that Earth is approximately 4.6 billion years old.

it would be b. 6co2 + 6h2o --> c6h12o6 + 6o2

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.