Answer: B) They are Easily carried by the wind
??? where is the rest of the info
The choices can be found elsewhere and as follows:
difficulties transporting goodsfighting during World War IIprivatization of industrypolicies during the Soviet era
I believe the correct answer is the last option. Siberia has experienced many environmental problems because of policies during the Soviet era.
Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Several types of evidence supported Hess's theory of sea-floor spreading: eruptions of molten material, magnetic stripes in the rock of the ocean floor, and the ages of the rocks themselves. This evidence led scientists to look again at Wegener's hypothesis of continental drift.
