Answer:
d) a wall that was built as a boundary but is no longer considered a boundary
Explanation:
Take the Berlin Wall for example, it is a relic boundary because it no longer splits Germany into East and West Germany.
The definition for a relic boundary is a boundary that no longer exists as a boundary just a cultural landscape.
The answer is C. Hope i could help
It comes from methane in their clouds
1.Africa’s population as a whole is projected to grow very rapidly in the coming 85 years, from 1.2 billion today to 4.4 billion people in 2100 — an increase of 266%.
2.At the end of the current century, Africa’s population will be equal to the total world population back in 1980.
3.By 2100, Africa will — if UN projections bear out — account for almost 40% of the world’s 11.2 billion population.
4.Despite a falling population in China, Asia’s overall population is projected to rise from 4.4 billion today to 4.9 billion in 2100, an increase of 11%.
5.While Asia will retain its status as the most populous region, Africa is catching up. Today, Africa’s population is one-quarter the size of Asia’s.
6.By 2100, Africa will have a population that is just 10% smaller than Asia’s.
7.Nigeria will move from being the world’s seventh most-populous country today to its third most-populous country in 2100 (behind only India and China).
8.And while Nigeria is the only African nation among the top 10 today, it will be one of five in 2100.
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Deserts where made long ago, but some may be made by the temperature and maybe sand from the beach could travel, hoped I helped!
