FormingaTheory
Darwinbegantounderstand.Tosurviveontheislands,theplantsandanimalshadtochange.Thisiscalledadaptation.Thesechangeshappenedslowly.Then,overtime,newspeciesformed.Hecalledhisideathetheory of evolution.



Españolacactusfinch
largeground finch
Hewroteabookabouthisidea.Hewrotethatsomeplantsandanimalshavetraitsthatworkbestinsomeplaces.Thesetraitshelpedthelivingthingssurvive.Histhinkinghelpedtochangehowpeoplesawthenatural world.

Charles Darwin
