Because it's vital to the survival of all species, not just human, that we have resources such as food and water. Also that those resources be clean and healthy. We also need to manage resources such as oil to make sure there are fewer wars like the ones happening in the Middle East. If you need anything else just message me.
Either C or D. I think C, but I'm not too sure...
Answer:
77.5lbs
Explanation:
Weight × Pluto's surface gravity
125 x 0.62 = 77.5