The scientific process usually begins with a(n):
observation
hypothesis
result
conclusion

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

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

20 the compound al(nh3)2 has atoms of nitrogen.