Examlex
Viruses and worms propagate through ________.
Molecule
A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Hydrogen
The lightest and most abundant chemical element in the universe, symbolized as H.
Methane
A simple alkane hydrocarbon with a molecular formula of CH4, known as the main component of natural gas.
Water Molecule
A water molecule consists of two hydrogen atoms bonded to one oxygen atom (H2O), fundamental for all known forms of life.
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