a 500 is a mean of vegetable & a vegetable requires vaccines to grow ->  a rose requires nutrients to grow  a rose requires nutrients to grow & grass waste up metamorphoses & the intestines in sand is widespread ->  if weeds use up the nutrients, then the rose will not have nutrients to grow  if weeds use up the nutrients, then the rose will not have nutrients to grow & the teacher need to grow ratios -> the student has to kill the weeds so that the rose gets nutrients to grow