What is the difference in the beginning between primary succession and secondary succession
a) secondary succession has water
b) secretary succession has soil
c) primary succession has soil
d) primary succession has water

Which two factors contributed to creating a global culture? the creation of the united nations improvement in telecommunications health issues such as the ebola virus increased opportunities for global travel

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

What class of levers is shown in this image?