Which process occurs during the light dependent reaction in photosynthesis

Formation of ATP and NADPH

Explanation:

During the light reaction of photosynthesis, one molecule of each of ATP and NADPH is formed and these serve as precursor for the light-independent reaction of photosynthesis. The process occur in the chloroplast of plants and can be summarized below:

Chlorophyll within the chloroplast absorbs light, leading to the excitement of electrons within its photosystemsThe excited electrons are released from the photosystemsWater molecules is split to release electrons, H+ and oxygen. The electrons replace those lost by the photosystems due to excitationThe excited electrons released by photosystems enter into the electron transfer chain and reduce NADP+ to NADPH The build up of H+ creates a gradient that ATP synthase enzyme uses to synthesize ATP from ADP.

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.

Ten percent of energy is transferred from sun to the level indicated.