What is a system of knowledge and the methods of find that knowledge

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.

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

Select the word from the list that best fits the definition the nuclear family into which a person is born or adopted.