Examlex
Viruses are known to infect Bacteria, but no virus has yet been found that infects Archaea.
Half-Life
The time required for half the quantity of a radioactive substance to undergo decay, also used in broader contexts to describe any type of exponential decay.
Half-Life
The time required for one half of the atoms of a radioactive substance to disintegrate into more stable materials.
Half-Life
The time required for half the quantity of a radioactive substance to undergo decay.
Half-Lives
The time required for half of the atoms in a radioactive sample to decay into other elements or isotopes.
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