The table shows the mass of and acceleration due to gravity for several planets in the solar system. If air resistance is ignored, on which planet would a space probe with a mass of 250 kg have the lowest speed after falling 50 m?

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