Astronomers recognize 88 constellations of stars in the sky, including the 12 zodiac constellations. how are these constellations used by astronomers?
a. to find the location of the milky way.
b. to identify stars which are the same distance from earth.
c. to track the movement of the sun during the year.
d. to name nearby galaxies.

Data courtesy of the un development programme 2006-2008 and world bank 2009 the chart above compares measures of development using the hdi and gdp. why might turkey rank lower in the hdi indicator even though it has a high gdp?

Ahill is made of rock particles of different sizes. which of these agents of erosion probably caused the hill to form?

This map shows the member states of the european union (eu). based on this map, what is the most likely reason the eu was formed? a) to increase trade between european nations b) to protect themselves from foreign enemies c) to begin the process of forming one large nation d) to isolate europe from the rest of the international community j