The distance from earth to the sun, as measured at 149,597,870.691 kilometers, is called
a. the earth/sun continuum.
b. an astronomical unit.
c. the speed of light.
d. an orbital distance.

Why does sweden and norway have steep roofs

Where would you be most likely to find a freshet?

Why are all maps distorted? when reading a map, why is it important to check the legend? what is the difference between longitude and latitude? identify the meridian at 0° longitude and the parallel at 0° latitude.