Ijust need to know the answer about the questions

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Most metamorphosis processes take place

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.