What was the one-drop rule?

Which statement about new zealand’s first inhabitants is not true? a. the maori have no political power today. b. the origin of the maori is in dispute by scholars. c. the maori are trying to reassert their claims to the land. d. the maori lost most of their land in the 1800s to the british colonists. (gradpoint)

Abird flies at a speed of 75 metres per second for 15 seconds, how far does the bird fly

Name two factors that, "power of magnetic field " of earth.