Short Answer 
The key climate facts include identifying April as the cloudiest month, January as the coldest, and May as the hottest, with February marking the first temperature above 90 degrees. To improve a bar graph, adding a clear title and visuals will enhance clarity, and a suggested research question is to explore which fixture in the home uses the most water, guiding data collection and analysis.
Step 1: Identify Key Climate Facts
Start by noting the key climate statistics highlighted. For better understanding, focus on the following monthly temperature data:
- The cloudiest month: April
- The coldest month: January
- The hottest month: May
- First temperature above 90 degrees: February
Step 2: Improve Bar Graph Clarity
To enhance the readability of the bar graph, consider adding important elements. These can help clarify the data presented:
- A Title: Clearly state what the graph represents.
- Add Pictures: Visuals can help in quickly conveying the data context.
Step 3: Formulate a Research Question
To structure a research project effectively, Sarah needs to develop a guiding question that directs her investigation. An appropriate question could be:
- Which fixture uses the most water in our home? This question will lead to data collection and analysis that can reveal insights about water usage and conservation.