What is the difference between a phytoalexin and a phytoanticipins? Using named examples outline the roles both play in modifying plant microbe interactions

Defensive metabolites produced and stored constitutively in plant tissue are termed phytoanticipins (Van Etten et al., 1994), whereas those synthesized de novo in response to infection are termed phytoalexins (Müller & Börger, 1940; Paxton, 1981).

Explanation:

they had the law tat factories that produces smoke cannot be built near residential buildings.

building of proper sewage system was done to ensure that the waste is carried away from the humans so that they do not get diseases from it.

also they built water systems to provide water in those areas which are drought prone.