A : Forecasting the weather has always been a defficult business.
B : During a period of drought, steams and rivers dried up, the cattle died from thirst and were ruined.
C : Many different things affect the weather and we have to study them carefully to make accurate forecast.
D : Ancient egyptians had no need of weather in the Nille valley hardly ever changes.
E : In early times, when there were no instruments, such as their mometer or the barometer, a man looked for tell tale signs in the sky.
Show Hint
Historical or time-based clues often indicate the opening sentence.
The paragraph starts with early times (E), gives a historical example (D), explains consequences of drought (B), generalises weather factors (C), and concludes with forecasting difficulty (A).