(A) Polluted runoff and storm water
(B) Sewage spills from treatment plants
(C) Oil spills
(D) Ships dumping their holding tanks into coastal waters
(E) People leaving their trash on the beach
- Atmospheric carbon dioxide levels (A) are about 10% higher than they
were at the time of the Industrial Revolution (B) are about 25% higher than
they were at the time of the Industrial Revolution (C) are about the same as
they were at the time of the Industrial Revolution (D) are slightly lower
than they were at the time of the Industrial Revolution (E) are significantly
lower than they were at the time of the Industrial Revolution For Question
91, use the following information: A scientific study took ice core samples
to measure the concentration of carbon dioxide that was present in the
atmosphere for the last 1,000 years. Their findings are shown below:
- Which of the following mathematical setups could be used to determine the
approximate percentage increase in the carbon dioxide concentration over
the last 1,000 years (use the year 1000 as the base year for comparison)?
(A)
