Does anyone know the connection between Acid rains, the Greenhouse effect and the Ozone layer? My biology teacher asked use to define air pollution by using those three matters

Which description provides the best objective summary of the article in the passage?

Select the correct answer from each drop-down menu proteins are

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