Question

why is emu is flightless bird with reson​

Answer 1

Answer:

Scientists at the Australian National University believe the emu evolved to be flightless because his ancestors got lazy. ... When the dinosaurs became extinct, the emu had no reason to be able to fly, so it didn't. Over time, emus with weaker flying ability would have been removed from the gene pool by dinosaurs.

Answer 2

Answer:they cant fly

Explanation:Unlike most birds, their flat breastbones lack the keel that anchors the strong pectoral muscles required for flight. Their puny wings can't possibly lift their heavy bodies off the ground