Answer:
Weight is directly proportional to our mass and acceleration due to gravity of that planet
Well we can always smell things like if food smells bad or if we smell something we have to know whether that smell is good or bad. You could be able to smell animals that are dangerous. Or animal droppings, to know what animal it is if you are in danger.
B. it was necessary to see data from more plants before the conclusion could be accepted.
You would multiply the speed by the time. So the answer would be 840 miles.
