 
 <prompt> Wia those wey dey follow Darwin dey stand on transmutation of species? Given di previous question, write one context wey contain di answer. E fit be 1 - 20 sentences. Context: <response>: ```Darwin aim na two: to show say species no dey create separately, and to show say natural selection na di main agent of change. E sabi say im readers don sabi about transmutation of species from Vestiges, and im introduction dey mock dat work as e no fit provide workable mechanism. So, di first four chapters dey explain im case say selection for nature, wey dey caused by di struggle for existence, dey similar to di selection of variations under domestication, and say di accumulation of adaptive variations dey provide scientifically testable mechanism for evolutionary speciation.``` 