Question

geographical and reproductive isolation of organisms gradually leads to speciation
justify this sentence in simple words

Answer 1

new species generally forms when geographical area keeps the existing species apart nd it results in adaptations by species where they live. ultimately they will transfer to the environs all factors where they live reproduction also forms new species as mating is different in different species

Answer 2

Geographically isolated organisms have different environmental factors and they evolve differently
This leads to speciation