Question

In contrast to the high islands, the low Pacific Islands _____. A. have more densely populated areas B. have more people of European descent C. are made of volcanic ash D. are made of built-up coral

Answer 1

The low Pacific Islands are made of built-up coral.

Explanation:

The Pacific Islands, based on their general topography, can be divided into two categories; high islands and low islands. The high islands are the ones that have high elevations, and they are all volcanic islands. The low islands are the ones that have maximum elevation of only few meters above the sea level, and most of them are made of built-up coral.

The low islands came to be because of the corals. The corals have been building up more and more, and at certain point they came to be very close to the surface of the water. Once the water retracted, they emerged above the surface, died out, and set the foundations for formation of islands with it.

These islands face huge problems lately, mostly connected with the climate change. Because of the rising sea levels, and them being only few cm to only few meters above sea level, they will probably get submerged very soon and disappear.

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