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Answer key · for teachers
Figures as of November 14, 2026, from each chart's current data.
Chart 1 of 2 · Food and drug safety
The chart's answer: The FDA classified 77 food recalls for salmonella in 2025; the most since 2013 was 80 in 2016. Salmonella is a germ that causes food poisoning, often from eggs, produce, nuts, spices and pet food. A recall counts once however many products it covers, in the year FDA first listed it in its weekly Enforcement Report. Chartly sorted FDA's written reasons by their key words; a recall that names listeria too is counted on the listeria chart instead. Meat, poultry and most egg products are USDA's to recall and aren't included. The newest salmonella recalls, this year's included, are listed below.
In one sentence of your own, what does this chart show?
Open question: answers will vary. Look for answers that use the chart's numbers and source.
Find the biggest change or difference in the chart. What might explain it?
Who collected these numbers, and how recent are they? What else would you want to know before drawing a conclusion?
Source: U.S. Food and Drug Administration, Enforcement Reports (openFDA food recall data) (Public domain (U.S. government work); source U.S. Food and Drug Administration, openFDA) · Data as of Nov 4, 2026 · chart.ly/charts/salmonella-food-recalls-per-year
Chart 2 of 2 · Energy
The chart's answer: In 2025 natural gas made 40.8% of US electricity, followed by nuclear (17.7%) and coal (16.6%). Wind made 10.5% and solar 6.7%. Solar counts only utility-scale plants, not rooftop panels, and the 2025 figures are preliminary.
Which source makes the most electricity? About how many times more than the smallest bar?
Which of these sources burn fuel and which don't? What share of electricity comes from each group?
Open question: answers will vary. Look for answers that use the chart's numbers and source.
Why might a chart of this kind look different in your state than for the whole country?
Open question: answers will vary. Look for answers that use the chart's numbers and source.
Source: U.S. Energy Information Administration, Monthly Energy Review (Table 7.2a) (Public domain (U.S. government work)) · Data as of Dec 31, 2025 · chart.ly/charts/where-us-electricity-comes-from
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