Which of the following are true or false for solutions and mixtures.

true or false mixtures can only be heterogeneous, not homogeneous.
true or false a solution cannot have substances that were in different phases of matter before they were mixed to form the solution.
true or false a mixture is a blend of two or more pure substances.
true or false the substance that does the dissolving is the solute.
true or false a solution has only a solvent or a solute, not both.

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.