Gomez found the masses of three rocks for science project .the first rock had a mess of 19.28 grams, the second rock had a mass of 25.3, and the third rock had a mass of 46.3. how much greater was the mass of the third rock than the combined mass of the other two rocks?

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