How are rocks related to the surface layer of the Earth? O The surface of the Earth can affect how rocks are formed.
O Rocks provide clues on how the surface of the Earth is formed.
The surface of the Earth is made of different types of rocks.
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Rocks provide clues on what type of animals lived in the past.

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