The ends of the dna chains are made up of several repeating nucleotides that do not function in genetic instruction or as genes. These end nucleotides are called A. Telomeres

B. Histones

C. Chromatids

D. Centromeres

I’m pretty sure it’s D because when I was in biology I never heard of the rest of the choices

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.