19,879
edits
Changes
→Chemical Barriers
===Chemical Barriers===
: [[Plant]]s produce a number of [[chemical]]s which have [[antiseptic]] or [[antibiotic]] properties.
: When [[plant]]s become distressed they give off [[pheromone]]s pheromones which cause nearby [[plant]]s to also produce [[antiseptic]] and [[antibiotic]] [[chemical]]s, preventing [[pathogen]]s from spreading.