When the task is to describe two completely different charts, there's no need to compare them; we can simply write a separate paragraph about each one.
So here's the paragraph structure that we can use for this question:
- Introduction: paraphrase the question statement (see this lesson)
- Overview: write one general sentence about each chart (like this)
- First chart: describe the details (2 to 4 sentences)
- Second chart: describe the details (2 to 4 sentences)
I'll show you my full answer in next Thursday's lesson.