Dehydration reactions they do so by dehydration reactions they do so by link monomers to form a polymer; adding a water molecule remove monomers from polymers; adding a water molecule remove monomers from polymers; removing a water molecule link monomers to form a polymer; removing a water molecule

Dehydration reaction is the chemical reaction  between compounds where one product is water. It is also known as Zimmer's hydrogenesis, 
Dehydration reactions link monomers to form polymers. They do so by removing a water molecule.The molecule of water formed is due to the interaction between hydroxyl group and a hydrogen ion.

Dehydration reactions link monomers to form a polymer, they do so by removing a water molecule. So it is the reaction that forms polymers by joining two monomers and these polymers are used for making up the components of living organisms like proteins, nucleic acids and so on.

The answer is atmosphere. there are four spheres of the earth: 1. geosphere (from greek word 'geo' = ground), 2. hydrosphere (from greek word 'hydro' = water), 3. biosphere (from greek word 'bio' = life), and 4. atmosphere (from greek word 'atmo' = air). a magnetosphere is a region of space around astronomical objects controlled by the magnetic field of that object. through the process of elimination, since lightning is present in the air, it can be found in the atmosphere.