Name the fluid present between arachnoid and pia mater

This is one of the five kingdoms in the older biological succession. organisms in this kingdom are prokaryotic

How can a geological time scale best be reconstructed? a) comparing vestigial structures in living species b) comparing homologous structures in living species c) examining homologous structures in fossil remains d) examining the written records of scientists from past cultures

What best explains the inability for life to exist in earth early atmosphere