Dna is made of two chains of nucleotides. which type of bonds hold the chains together?

DNA is made of two chains of nucleotides which are phosphodiesterase bonds and Hydrogen bonds.Phosphodiesterase bonds link nucleotides into linear chains and hydrogen bonds act as a bridge that connects two parallel rows of nucleotides.

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.