According to darwin's theory of evolution, differences between species may be the result of

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.

50% lit on the left side