Question 1
It is estimated that, after 1999, Earth will have added another billion people by the year
◦ 2011.
◦ 2020.
◦ 2032.
◦ 2038.
Question 2
The
Deepwater Horizon oil spill
◦ was much smaller than the
Exxon Valdez spill.
◦ was leaking 2.1 to 4.0 million gallons a day.
◦ involved drilling a well 160 km deep.