brethren
Example Sentences
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For yard treatments, companies typically use pyrethrins - bug-killing substances produced by chrysanthemum flowers - or synthetic imitators called pyrethroids.
From Washington Times • Aug. 19, 2022
Mosquito experiments showed the chemicals work best when combined: EBF activates Or31, and pyrethrins enhance repellency by intensifying nerve signaling.
From Scientific American • Aug. 18, 2021
Critics, of course, point to evidence that pyrethrins are highly toxic to honeybees and wild pollinators.
From Salon • Oct. 26, 2019
Residential services typically use insecticides registered with the Environmental Protection Agency, like pyrethrins, derived from chrysanthemum flowers; and pyrethroids, synthetic chemicals that mimic pyrethrins.
From New York Times • Jul. 14, 2017
Synthetic substitutes for the pyrethrins have recently been developed, and some of the producing countries stand ready to increase the output of the natural product as the market may require.
From "Silent Spring" by Rachel Carson
Vocabulary lists containing brethren
"Give Me Liberty or Give Me Death" by Patrick Henry (1775)
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Beowulf vocabulary
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The Monroe Doctrine (1823)
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