An illustration of this sort of species—called r -selected species — may be the lemming. MacArthur and Wilson in comparison these animals to species which have slow expansion and secure populations. An illustration of this kind of species—called a k -chosen species —could be the elephant. Scientific Interests Areas of https://robert-macarthur55443.blogprodesign.com/50865541/dr-robert-macarthur-rm-an-overview