Assertion: brazil nut | /r/MadeOf | small amounts of radium
Facets:
Source sentences:
text: Brazil nuts contain small amounts of radium, a radioactive element, in about 1–7 nCi/kg or 40–260 Bq/kg, about 1000 times higher than in several other common foods; according to Oak Ridge Associated Universities, this is not because of elevated levels of radium in the soil, but due to "the very extensive root system of the tree.
text: Brazil nuts contain small amounts of radium.