The discovery of the Blombos cave suggests a.
copper alloy or bronze casting were first used in Sub Saharan Africa.
b.
Islam became an economic and religious force in West and North Africa.
c.
that abstract thought in humans occurred much earlier than once thought.
d.
the French colonies were taken over before the third or fourth centuries.

Read the excerpt from the building of manhattan. the heater cranked the blower handle to force air up through the fire and heat the rivets in the furiously burning bed of coals. he knew how hot the rivets were by the way their color changed. cherry-red rivets were 1,000 to 1,950 degrees fahrenheit. at the right moment he grabbed one in his tongs and tossed it to the catcher. which phrase cannot be changed in a paraphrase of this text? “the furiously burning bed of coals” “by the way their color changed” “1,000 to 1,950 degrees fahrenheit” “force air up through the fire and heat”