How has the Doppler effect and the redshift of stars and galaxies indicated that the universe is expanding?

What is the northern most national park in the world

Why isn't the balkan region good for farming? it has dry summers. it is far from the sea. its soil is not fertile. its terrain is mountainous. its winters are mild.

Astudent in a skill or trade training program who is learning by gaining experience is a(n) a. mentor b. volunteer c. colleague d. apprentice