Most people in South America make a living in

Question 2 options:

manufacturing.

service or tourism industries.

agriculture or natural resources.

investments.

High Pacific islands are formed by the 'mid oceanic ridge'.

Explanation:

The small pieces of lands that are seen in the middle of oceans are due to the undulations in the elevation of the seafloor. The consistent eruptions of lava in the middle of the oceans caused the mid oceanic ridges to form. Some of these ridges rose above the sea level and made high islands. There are many such islands in the 'Pacific Ocean' out of which, the South Island of the New Zealand is the biggest.

agriculture or natural resources - service or tourism industries

Explanation:

As South American economies are not fully developed most of the countries remain rural and the sectors that develop the most are agricultural and service or tourism