Rate (cm/day) = Loss in cm / 3 days.<br><br>
Rate for days 7-10 = (Level day 7 - Level day 10) / 3.<br>
Rate for days 19-22 = (Level day 19 - Level day 22) / 3.<br><br>
Identify which rate is faster. Faster rate as % of slower rate = (Faster rate / Slower rate) × 100%.<br><br>
Final Answer: Read from the graph and compute.