Author Question: Today we add one billion people to the world's population approximately every 13 years, which comes ... (Read 173 times)

misspop · **on:** Jul 10, 2018

Today we add one billion people to the world's population approximately every 13 years, which comes out to about ________ people an hour.

a. 9,000
b. 200,000
c. 90,000
d. 2,000
e. 9

Question 2

Scientists estimate that around 10,000 year ago, only about _____ people inhabited the earth.

a. 5 billion
b. 5 trillion
c. 5 thousand
d. 5 million
e. zero (earth was created 6,000 years ago)