The movement of a characteristic from one place to another over a period of time
a countermigration stream
b migration stream
c diffusion

What is the name of the ocean current that affects the british isles? how does it influence their climate?

Crisis in rivalries between the serbs, croatians and muslims has been going on for centuries and only intensified during the 1990s when non-communist rulers were elected

An enormous wave generated by an earthquake beneath the seafloor is known as a