Final answer:
The purpose of 'how bees make honey' presentation is to explain the process of honey production by bees and the importance of bees in the ecosystem. The purpose of the 'how a bill becomes a law' presentation is to describe the legislative process and how a bill is passed into law.
Step-by-step explanation:
The first presentation, how bees make honey, has the purpose of explaining the process of honey production by bees and the importance of bees in the ecosystem. This is evident from the information provided about bees' role in pollination and their contribution to food crops.
The second presentation, how a bill becomes a law, has the purpose of describing the legislative process and how a bill is passed into law. This is supported by the information provided about the classic legislative process, committee hearings, debates, and the role of members of Congress.