What is an unconformity? a. evidence of past life b. all the time passed since the origin of earth c. a division of strata that can have multiple layers d. an erosional surface representing a gap of time in the geological record

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

Which of these definitions have been paired with the correct type of cell?

Examine the following diagram. place the labeled layers in order from youngest to oldest.