Chemistry Question!!!?

Question

It takes 120 L of water to produce one 1.3-L can of fruit juice and about 450 L of water to place one boiled egg on your breakfast plate. What explanation can you give for these two facts?

Answer 1

HCL  

Answer 2

it takes more water to make one boiled egg and it takes less to produce 1.3-L can of fruit juice

Answer 3

I don't know offhand if the numbers are right, but the question is presumably talking about the _total_ water input to produce the two foods.  For example, in the case of the juice, the fruit tree has to be watered, the fruit probably is washed after picking, water is probably used at some stages of manufacturing the can, and so on.  For the egg, the chicken needs water, it eats vegetable foods from plants that need water, the egg gets washed to remove any chicken p**p, you have to boil it in water, and, if the stove is electric, there's a good chance a steam turbine was involved in generating the electricity.

(I guess the point of this sort of question is that, often, the indirect costs or inputs required to produce something are bigger than the obvious, direct ones.)