The First Life Forms Might Not Have Needed Phosphate
Almost all life on Earth requires orthophosphate . This presents a puzzle , because it is much less easy available than the other fundamental elements of liveliness . How could the first spirit forms have acquire it ? Now it has been shown that atomic number 15 is not a theoretical requirement for simple life , and may have been a later increase . If the idea wins far-flung acceptance it could vary how we look for lifetime beyond Earth ....