The world is facing accelerated rates of species extinction largely due to human activities. Explain any three human activities responsible for…

clearing of (Amazon rain) forest for developing cultivable land leads to the fragmentation of habitat will affect the population of organisms living in that area / any other correct explanation or marine fish / any other correct explanation lead eventually to the extinction of $\displaystyle 200$ species of Cichlid fish or introduction of Clarias gariepinus ( African catfish) for aquaculture purposes is posing a threat to indigenous catfishes or Parthenium ( carrot grass) or Lantana or Eicchornia (water hyacinth) introduced unintentionally causing decline of indigenous species / plant-pollinator mutualism or fish-parasite relationship will lead to extinction of other (obligatory) species mammals / (migratory) birds. (more than $\displaystyle 2000$ species) native birds.