Why are eastern & western europe considered perceptual regions ?

Simple astronomical telescope the objective lens has a focal length of 75 cm and that of a piece of 5cm of the lenses are 18 cm apart when will be final image of a distant object before

What did the native title act do? a. it recognized and protected aboriginal rights to land. b. it stated that aborigines were to be counted as part of the census. c. it established aboriginal languages as official. d. it granted aborigines suffrage.

The earth rotates on its axis and revolves around the sun every