perjudiquen

In a sentence

• Els hàbits tòxics sovint perjudiquen la salut.

  Toxic habits often harm health.

  Here, 'perjudiquen' is the third person plural form of the verb 'perjudicar' (to harm), indicating an action performed by 'tàctiques tòxiques' affecting 'la salut'.

• Cal evitar les accions que perjudiquen el medi ambient.

  It is necessary to avoid actions that harm the environment.

  In this sentence, 'perjudiquen' refers to actions in the subjunctive present that cause harm to 'el medi ambient'.

• Els canvis recents en la política no perjudiquen els treballadors.

  The recent changes in policy do not harm the workers.

  The word 'perjudiquen' functions here as a negative assertion of harm not being caused to 'els treballadors' by 'els canvis recents en la política'.