Does a cold front count as weather? answer !

Select all the true statements about the cosmic microwave background radiation

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere

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