What do two or more atoms form when they share electrons in a chemical bond? an element a mixture a molecule an ionic compound

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.