The boundaries between the Indian and the Somali plate and the one between the Indian and the Eurasian plates, are different types of boundaries, thus the land forms differ from one another.
The boundary between the Indian and the Somali plate is a divergent plate boundary. The land forms that appear on and around the boundary are dominated by rift valleys and steep mountains and hills that have been cut/separated because of the divergence.
The boundary between the Indian and the Eurasian plates is a convergent boundary between two continental plates. In here, both plates push against each other, creating a lot of pressure on the land, so the land has been lifting up continuously for several million years, creating the Himalayan Mountain Range which dominates the landscape.
<span>The study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources and political and economic activities</span>
The correct answer is - C.) eliminating barriers to trade benefits the economies of member nations.
The regional trade blocs, in fact all trade blocks, are very useful for the economies of the countries that are members in the trade block. The benefit can be seen in the economic sector, as the countries can both, export products on larger markets without tariffs, and import products without imposing tariffs, which benefits the consumers as the prices are lower in that way.
The trade blocks have become a common thing in the world during the 20th century, and that has helped the economies of lot of countries, as well as the choices available and buying power of the consumers.