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Advertising that is targeted to particular customers,based on their observed online behavior,is called:
Matter
Anything that has mass and takes up space by having volume, including solids, liquids, and gases.
Nitrogen
A chemical element with symbol N and atomic number 7, essential for all living organisms as a constituent of proteins.
Synergistic Interaction
A situation where two or more substances or actions combine to produce a total effect greater than the sum of their individual effects.
Isotopes
Variants of a particular chemical element that differ in neutron number, and consequently in nucleon number, but have the same number of protons in their atomic nuclei.
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