Photsynthesis to make food
<span>Simple.
All of the millions of different life forms (the diversity of life) have come about by natural selection, whereby random mutations in the genes have either succeeded or failed.
But all life can be traced back to a common single-celled origin. Thus we have the unity of life where we (possibly) share more than 50 % of our DNA with a crocodile.eg:analogous organs, homologous organs.</span>
The sisters are different heights because one or both of the parents has a short allele that wasnt dominated by the tall allele, or vice-versa.
<span>The answer to your question is the mitochondria. </span>
