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IMSO 2007 Taiwan Selection — Science First Round Question 8

IMSO Science · IMSO 2007 Taiwan Selection — Science First Round

Question 8

Base your answer on the supplied table comparing human population and atmospheric sulfur dioxide (SO₂) over time.

| Year | Human population (billions) | Atmospheric SO₂ level (unit not supplied) |
|---|---|---|
| 1960 | 2.50 | 510 |
| 1970 | 2.75 | 525 |
| 1980 | 3.00 | 613 |
| 1990 | 5.00 | 642 |

How have the size of the human population and the amount of sulfur dioxide (SO₂) in the atmosphere changed from 1960 to 1990?
  1. The human population has increased while the amount of SO₂ has decreased.
  2. The human population has decreased while the amount of SO₂ has increased.
  3. Both the human population and the amount of SO₂ have increased.
  4. Both the human population and the amount of SO₂ have decreased.