Pls, help it's a quiz

In this experiment, the was intentionally manipulated. it is the independent variable. the dependent variables that were measured were the

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

Why are some people more concerned about shark survival than about shark attacks?