Below are the interpretations of this model from 4 students, which interpretation is correct as to what is happening?
This model shows creation of an RNA strand after unwinding the DNA from the
chromosomes.
This model shows disassembly of an old DNA strand so that nucleotides can be
free for a new strand.
This model shows the production of a protein from free floating nucleotides.
This model shows DNA replication after a previous strand was used as a
template.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

the answer to your question is tooth decay.