Answer:
Strong triangular iron strip in plough is known as ploughshare.
The correct answer it's D genesin DNA
The correct answer of the given question above would be option B. MESOZOIC ERA. Dinosaurs emerged during the Mesozoic Era. Dinosaurs existed around 65 million years ago and during this time, modern humans never existed yet. Mesozoic era lasted about 180 million years during the Triassic period. Hope this answer helps.