What forms in the sky when the air temperature is the same as the dew point Temperature? (Show steps)

In which situations is the principle of cross-cutting relationship useful in determining relative age?

Which factor that affects biodiversity?

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