Simple Perfect

Verbal Sentence	Non Verbal Sentence
Ants have colonised	Species have been classified
Their long co-evolution with other species has led	Their success in so many environments has been attributed
ants can be sampled and studied in ecosystems has made	These parallels with human societies have long been an inspiration
ants have coumpound	It has been hypothetized
Camponotus cylindricus group has enlarged	ants were likely to have been predators
few have evolved	genetic differences between worker castes have been noted
Ants' compound eyes have specialised	A wide range of reproductive strategies have been noted
have evolved a counter strategy	Oleic acid has been identified
has become a global pest because of it	interactive teaching has been observed
the first brood has hatched	It has been estimated