Oxygen, nitrogen, and fluorine bond with hydrogen to form molecules. these molecules are attracted to each other by

The oxygen, nitrogen, and fluorine bonds with hydrogen to produce molecules, these molecules are fascinated towards each other by hydrogen bonds.  

A hydrogen bond refers to a partially electrostatic attraction amid a hydrogen atom that is combined with a more electronegative group or atoms like oxygen, nitrogen, or fluorine. In this bonding, one is known as the hydrogen bond donor, and another atom adjacent to it exhibiting a lone pair of electrons is known as the hydrogen bond acceptor.  

b) mutualism

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b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.