Examlex
In her book Silent Spring, Rachel Carson sounded the alarm about the health hazards of chemical pesticides such as DDT, but the book did not have any tangible effect on the use of such pesticides in the U.S.
Neutrons
Subatomic particles present in the nucleus of an atom, carrying no electrical charge and having a mass slightly larger than that of protons.
Uranium
A heavy, silvery-white metallic element, radioactive and used as fuel in nuclear reactors and weapons.
Isotope
Variants of a particular chemical element which differ in neutron number but have the same number of protons.
Iron-56
An isotope of iron with a mass number of 56, known for its stability and abundant presence in the universe.
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