Why do some worry about the sherpa culture changing

Hurry ! between 1900 and 2010, how did the world’s population change? a. it increased from about 1.5 billion to almost 7 billion. b. it decreased from about 7 billion to about 1 billion. c. it increased from about 5 billion to about 7 billion. d. it decreased from about 7 billion to about 1.5 billion.

Newspaper started by john campbell:

During the late 19th century, russia's settlement and development of siberia was made possible by the invention of the