The word ecology is made up of two greek words, oikos and logia, and means ""
-house knowledge
-life logic
-house logistics
-environmental knowledge

Although there are a limited number of amino acids many different types of proteins exist because..

What were the main components of earth’s earliest atmosphere? oxygen and ammonia hydrogen and helium oxygen and nitrogen hydrogen and nitrogen

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