Chapter 1, Problem 55A

Interpretation Introduction

Interpretation:

The year in which the biggest and smallest area of ozone hole occurred needs to be determined.

Concept introduction:

Visual display of data is defined as a graph. By using the given data, a student can create graph. Graph helps to understand any data easily.

Answer to Problem 55A

The year of largest ozone hole area is $2000$ and smallest ozone hole area is $2002$.

Explanation of Solution

The graph represents the data of ozone depletion which is divided between years and area. Area is given in million kilometers square.

According to the graph, the longest area of ozone was depleted in the year $2000$ and the lowest area of ozone was depleted in the year of $2002$. In $2000$, $28.7$ million square kilometer area of ozone was depleted and in $2002$, 18.0 million square kilometer area of ozone was depleted.

Conclusion

Year $2000$ witnessed the longest depletion whereas year $2002$ witnessed the smallest depletion of the ozone layer.