A sunflower is a plant and <em>Amoeba</em> is a protist. Structurally <em>Amoeba</em> is a unicellular, microscopic organism and its cell does not have cell wall, whereas sunflower plant is a multicellular organism and its cell have cell wall. Since <em>Amoeba</em> is made of only one cell, all the life processes such as nutrition, excretion and reproduction carried out by one cell. In sunflower plant is made of many cells. All the cells are arranged in tissues, organs and organ systems. specific organ system performs specific life process, for example digestion system performs the function of digestion. Thus, <em>Amoeba</em> is a simple organism and sunflower is a complex organism.
The fossil shows evidence of how animals lived on Earth in the past and shows history about animals that may be extinct now or have evolved since then, which would show development in the animal in the fossil.
