Iodine-131 (usually in the chemical form of iodide) is a component of nuclear fallout, and is particularly dangerous owing to the thyroid gland's propensity to concentrate ingested iodine, where it is kept for periods longer than this isotope's radiological half-life of eight days.
Magma is composed of molten rock and is stored in the Earthâs crust. Lava is magma that reaches the surface of our planet through a volcano vent. Lava flow, Hawai. Courtesy of the U.S. Geological Society.agma is composed of molten rock and is stored in the Earthâs crust. Lava is magma that reaches the surface of our planet through a volcano vent. Lava flow, Hawai. Courtesy of the U.S. Geological Society.
Lava is hot molten rock that erupted from volcano Magma is hot material below earths crust, from which lava is formed So the basic difference is just that lava is hot molten r â¦ ock that already erupted; while magma is what is inside earth' s crust. 10 people found this useful.xists and is an alternate of. Merge this question into. Split and merge into it. Answer by Jacky Wu. Confidence votes 21. Magma and lava are both molten (liquid) rock, but magma is molten rock produced underneath earth's surface and lava is the magma that was produced that is flowing onto earth's surface.