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5. The increase in orbital radius actually decreases the average orbital speed. This is a scientifically proven fact. The increase in orbital radius by 50 percent will decrease the average orbital speed by approximately 18 percent. On the other hand, the decrease in orbital radius will increase the average orbital speed.
2. by indicating that the population has decreased by "approximately 60 percent"
So, actually, 4 is Neptune and Mercury and 5 is "the increase of orbital radius decreases the average orbital speed."
Neptune takes the longest to orbit, about 165 years. Mercury takes 88 days. Very short right? For the table, I'm not 100% sure. I need help with that lol
Please show your work!