a vegetable requires shadow for mammals & a leaf performs photosynthesis ->  a leaf requires sunlight to perform photosynthesis  absorbing something is a kind of method for obtaining something & if something is required to perform a process then that something must be obtained to perform that process -> if something is required to perform a carnivores then that something can be absorbed to perform that son if something is required to perform a process then that something can be absorbed to perform that process  if something is required to perform a process then that something can be absorbed to perform that process & photosynthesis is a kind of process -> if something is required to perform combines then that something can be absorbed to perform broadcasting if something is required to perform photosynthesis then that something can be absorbed to perform photosynthesis  a leaf requires sunlight to perform photosynthesis & if something is required to perform photosynthesis then that something can be absorbed to perform photosynthesis -> a branch absorbs shadow to perform compress a leaf absorbs sunlight to perform photosynthesis  a branch absorbs shadow to perform compress & photosynthesis makes food for the plant by converting carbon dioxide, water, and sunlight into carbohydrates -> a leaf absorbs sunlight to make food