In 1912 Alfred Wegener (1880-1930) noticed the same thing and proposed that the continents were once compressed into a single protocontinent which he called Pangaea (meaning "all lands"), and over time they have drifted apart into their current distribution.
Answer:
I recently learn about population policies in India and China and I can confidently tell you that B is the answer. Family Planning Education.
The only disadvantage I could think of would be price of equipment needed to produce energy from the source (i.e. price of solar panels)
Answer:
More developed countries (MDCs) are located mainly in North America (Anglo-America) and East and West Europe (additional: Japan & South Pacific).
Least developed countries (LDCs) are located mainly in Latin America, East and South Asia, Southeast Asia, Southwest Asia/North Africa, and pretty much the whole of frican Africa is considered one big LDC. Africa is pretty much a continent of LDCs.