9. What does the root opt" mean?
ear
see
eye
far

i believe thw answer is far

sis. it's been a while since a read that and had that class so i can't answer for u

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.