Mary lay in bed and watched the constellations move on the ceiling over her head. her parents had brought her a star projector that projected them there. the stars moved in a circle across the ceiling, so her view was always changing. is this what happens in real life?

a) yes the stars orbit the sun
b)yes the stars are orbiting around the earth
c)no both the earth and stars are orbiting around the sun
d) no the earth moves, which makes the stars appear to move

1. The North Star, or Polaris, is the brightest star in the constellation Ursa Minor, the little bear (also known as the Little Dipper). As viewed by observers in the Northern Hemisphere, Polaris occupies a special place. The point in the night sky where the projection of the earth's axis lies is known as the North Celestial Pole (NCP). As the earth rotates on its axis (once every 24 hours), the stars in the northern sky appear to revolve around the NCP. Polaris lies roughly one half degree from the NCP, so this particular star appears to remain stationary hour after hour and night after night.                     2.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.