<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>
This is such a vague question. Are you asking what it is or how to trace the process?
Water treatment<span> is any process that makes </span>water<span> more acceptable for a specific end-use. The end use may be drinking, industrial </span>water<span> supply, irrigation, river flow maintenance, </span>water<span> recreation or many other uses including being safely returned to the environment.</span>
Answer:
Knowing how to read a pedigree allows you to track through the family history and how a condition is passed down, if it is genetic. It allows you to tell if the condition is sex-linked, autosomal, dominant, or recessive. It also allows you to see the family and what occurs in the family, such as marriages, miscarriages, and other relationships.
Answer: Elastic fibres helps to keep blood flowing onwards away from the heart in an artery
