^^^ check the photo... serious answers

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.

An object weighs 40n in air , weighs 20n when submerged jn water and 30n submerged in a liquid of unknown density .what is the density of the liquid?

The citizenship clause of the fourteenth amendment says a naturalized personis not a citizen and cannot become a citizen of the united states.is a citizen, just like someone who was born in the united states.must have been born in the united states, not in another country.must have been born in a country other than the united states