Which of the following materials is the heaviest?
a. aluminum (density 2.7 g/cm3)
b. copper (density 8.9 g/cm3)
c. gold (density 19.3 g/cm3)
d. lead (density 11.4 g/cm3)

Which of the following describes a boom period? a. as one population increases, another population decreases. b. as one population increases, the other population also increases. c. as one population decreases, another population increases. d. as one population decreases, another population also decreases

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

45 points how are people today being protected from tsunamis? earthquake data is analyzed to detemrine if a tsunami is likely, and if so, warnings are sent out. areas in tsunami risk zones are no longer heavily populated. radar is used to measure wave heights regularly. meteorologists study the winds to determine if wave heights will be large.