All of the following developments were available to humans during the paleolithic era except
a.
the controlled use of fire
b.
tools made of stone and bone
c.
spears
d.
pottery

The lines marked by the letters a, b, and c on the map above represent a. chains of volcanoes b. earthquake fault lines c. thin strips of heavy forests d. major rivers that flow from north to south

Which event most likely explains renewed demand in a recovery period? consumers choose to save more and spend less. economic policy renews consumer confidence and demand. producers decrease prices to prompt demand and recovery. production decreases to prompt increased demand.

Which of these is most likely a characteristic of a non-radioactive daughter isotope after it is form from the parent isotope ? a. stable electrons b. stable nucleus c. positively charged atom d. negatively charged ion