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Answer key · for teachers
Figures as of November 12, 2026, from each chart's current data.
Chart 1 of 3 · Food and drug safety
The chart's answer: The FDA classified 190 food recalls in 2025 for an allergen left off the label, such as milk, peanuts, tree nuts, wheat, soy, eggs, fish, shellfish or sesame; the most since 2013 was 282 in 2017. From 2013 through 2025, undeclared allergens were the most common reason food was recalled. 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 for a germ as well counts under the germ. Meat, poultry and most egg products are USDA's to recall and aren't included. The newest allergen 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/food-allergen-recalls-per-year
Chart 2 of 3 · Earthquakes
The chart's answer: In 2025 the world recorded 6,428 earthquakes of magnitude 4.5 to 4.9, 1,983 of magnitude 5, 129 of magnitude 6, 15 of magnitude 7 and 1 of magnitude 8 or more. Each step up in magnitude is roughly ten times rarer, and releases about 32 times more energy. Countless smaller quakes go unrecorded worldwide, so the chart starts at 4.5.
Roughly how many times more common is each band than the one above it?
The biggest bars are hard to compare with the smallest ones on this scale. What other way could you show these numbers?
The chart starts at magnitude 4.5. Why might smaller earthquakes around the world go uncounted?
Open question: answers will vary. Look for answers that use the chart's numbers and source.
Source: U.S. Geological Survey, ANSS Comprehensive Earthquake Catalog (ComCat) (Public domain (U.S. government work); source U.S. Geological Survey) · Data as of Dec 31, 2025 · chart.ly/charts/earthquakes-by-magnitude
Chart 3 of 3 · World
The chart's answer: 73.6% of the world's people used the internet in 2025, up from 15.6% in 2005, the first year the World Bank gives a world figure. It counts people who used the internet at least once in the previous three months. The world figures are estimates by the International Telecommunication Union.
About what share of the world was online in the first year on the chart, and in the latest year?
Did the share grow faster in some years than others? What could have sped it up?
Using the internet once in three months counts here. What does this number leave out about how people get online?
Open question: answers will vary. Look for answers that use the chart's numbers and source.
Source: World Bank, World Development Indicators: Individuals using the Internet (% of population) (CC BY 4.0 (credit the World Bank)) · Data as of Dec 31, 2025 · chart.ly/charts/world-internet-use
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