In which form does usable energy enter the earth's system and to what form of energy is all of this energy finally converted?

Assume that a student is given two different models of bacteria, with one model consisting of big bacteria and the other consisting of small bacteria. how can the student demonstate the theory of endosymbiosis using the models

Why can't you grow plants with adhesion water?

Explain how ancient whale fossils found in eqypt are believed to support the theory of evolution.