Question 1
What was true of African building materials during the first millennium C.E.?
a. Stone was increasingly used in West Africa during in the first millennium C.E.
b. The only construction material used during that period was dried mud.
c. Mosques were always constructed of wood.
d. The heavy use of mortar was predominant in buildings constructed at Great Zimbabwe.
e. Metal became an important building material as early as 1000 B.C.E.
Question 2
The three laws of motion that govern the planetary bodies and the objects on earth were explained by
a. Isaac Newton.
b. Galileo Galilei.
c. Ptolemy.
d. Nicolaus Copernicus.
e. Johannes Kepler.
The open ocean is the most extensive biome on earth.
Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Range of Motion of the Spine, Lateral Bending
Embarrassing Bodies
Proper Motion of Barnard’s Star
Earth’s orientation