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the process by which nitrogen passes through the ecosystem.
the process during which nitrogen gas is converted into substances that can be used by plants,...
a state in which the outer energy level of an atom of any element is completely filled with...
a group of elements that are non-reactive, monatomic gases (Group 0, 8 or 18).
molecular covalent compounds that do not conduct electricity in water.
not capable of being magnetised and not attracted to metals.
a group of elements that are poor conductors of heat and electricity.
a laboratory where the chain reaction is steady and controlled so that only one neutron is...
the nucleus is divided into fragments of roughly equal size.