Answer:
c) A subduction boundary
Explanation:
The subduction zones occur at places where two plates form a convergent plate boundary, and one of the plates is subducting below the other plate. As one of the plate is moving below the other plate, there's lot of stress and adjustments going in the crust, resulting in numerous cracks all along the plate boundary. The magma from the astenosphere manages to get up and comes out on the surface. Some of the magma will not be able to reach out of the water, while some will be able to, and the ones that manage to get above the water are creating volcanic islands. As this is happening all along the boundary, there will be a chain of lot of volcanic islands, but also volcanoes rising on the land as well, which will create volcanic mountain ranges as well. We can see this perfectly well at the ''Ring of Fire'', as we have lot of volcanic islands, and lot of volcanic mountain ranges in close proximity to the subduction zones.
Answer:
Australia is a nation in transition. In the span of a generation, Australia's population has increased by more than half. Demographically we are aging, with an average age 7 years older than it was 3 decades ago, but with a life expectancy 7 years greater than it was in 1984.
This does not provide evidence for tectonic movement, because the two oceans are connected.
The climate of Russia is formed under the influence of several determining factors. The enormous size of the country and the remoteness of many areas from the sea result in the dominance of the continental climate, which is prevalent in European and Asian Russia except for the tundra and the extreme southeast. Mountains in the south obstructing the flow of warm air masses from the Indian Ocean and the plain of the west and north makes the country open to Arctic and Atlantic influences
