a) Write a clear sentence to explain what information is represented by the graph. b) In which month was the dam levels the lowest? Explain. c) (i) Describe the slope of the graph between May and August. (ii) What does this tell you about the dam levels? d) Approximately how full was the dam in April? Write your answer as a percentage. e) Between which two months was there little or no rain? Explain.
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The graph shows the monthly dam levels measured in percentage over time, indicating fluctuations based on precipitation and evaporation rates. The dam levels were the lowest in July, likely because it is a mid-summer month when evaporation rates tend to peak, and possibly due to a lack of significant rainfall during that time. (i) The slope of the graph between May and August is mostly declining, suggesting a decrease in water levels. (ii) This indicates that the dam levels were dropping, likely due to high evaporation rates during hot months and potentially insufficient rainfall. In April, the dam was approximately 75% full, as inferred from the height of the graph at that month. There was little or no rain between June and July, which can be deduced from the steep decline in the dam levels, signaling that the evaporation outpaced the inflow from rainfall during this period.