During photosynthesis what breaks the reactants’ chemical bonds ?

The energy required to break the chemical bonds in the reactants and to create new bonds in the products is provided by light. The excess energy not used up in the chemical reactions is stored as chemical energy in the organic products formed.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.