2.15 describe the process of photosynthesis and understand its importance in the conservation of light energy to chemical energy

2.15 •photosynthesis is where energy from sunlight is converted into glucose: 

                   •light energy is absorbed by chlorophyll in plants leaves 

                   •it is then used to convert carbon dioxide (from the air) and water (from the ground) into glucose, which is used for respiration

                   •oxygen is a by-product