Frases de ejemplo en inglés con «ragweed»

Common ragweed is one of the most important herbs.
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More than 50 million people in the United States suffer from allergies, and their numbers are growing. New studies suggest that climate change may be at least partly to blame. Scientists say rising average temperatures and elevated levels of carbon dioxide are spurring the growth of many weedy, allergenic plants — such as ragweed — and extending the season of suffering for pollen-sensitive people across the country.
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