Use the drop-down menus to classify each of the following structures into one of the four types of hydrocarbons.

Can someone me with questions 12 and 13 plz.

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.