Suppose you and your roommate have the following agreement when it comes to cleaning your apartment: each person washes her or his own dishes after each meal. the principle of trade you just learned tells you that it would be more efficient if: a) both of you wash your own dishes after each meal. b) neither of you wash the dishes after eating. c) each of you wash half of all the dirty dishes. d) one of you wash all the dishes while the other does a different chore.

D

Explanation:

The principle of trade you just learned tells that it would be more efficient if they both do their divided work. There are some tricks of the trade that you can use in cleaning your own house:

jupiter is mainly composed of hydrogen and helium just like a star. spectral analysis of jupiter has revealed that in addition to hydrogen and helium, the planet is made of water, methane and ammonia. those elements are in trace amounts. the core of the planet is thought to contain some rock and metallic hydrogen. i hope this will give you the answer to your question! : d

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