The presence of a thick, rich layer of humus in the soil profile would indicate an ecosystem that
Owould have similar flora and fauna to the tundra
has very low productivity
is relatively warm and moist
does not cycle nutrients

Which of these is not an example of molecular homology? 1. use of dna and rna as genetic material 2.use of glycolysis as the first step in cellular respiration in both plants and animals 3. the lack of an igf-1 gene in prokaryotes 4. the use of aldolase b to break down fructose in bacteria, plants and animals