Because plants are planted in a given place they don’t have the luxury of moving away from environmental insults like insects, animals and humans can. To protect themselves they produce protective chemicals which are usually brightly colored (phytochemicals). Although we have the ability to move away we tend to remain in the presence of environmental insults partly because of convenience but mostly largely because we are unaware. When we eat the plants with those brightly colored chemicals we get the same protections that plants get. This quotation and the one follows is built on this understanding.
ONE MINUTE TIMER