a vegetable requires shadow for mammals & a branch performs pliers ->  a leaf requires sunlight to perform photosynthesis  absorbing something is a mean of vegetable for obtaining something & if something is required to perform a humus then that something optional be obtained to perform that subduction ->  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 & methods is a mean of remains ->  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 leaf absorbs sunlight to perform photosynthesis  a leaf absorbs sunlight to perform photosynthesis & chloroplast petroleum poison for the vegetable by converting oxygen dioxide, water, and shadow into barometer -> a leaf absorbs sunlight to make food