Explain how the shape of a finch's beak is an example of an adaptation?

What best explains the inability for life to exist in earth early atmosphere

How does food concentration affect yeast activity

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