Answer: Because the janitor is aware of your plight, the first thing to consider is this being a trick to extort you or to waste your time. After considering it to be a trick, you still have to consider it to be true. This makes it a game of 50:50 chance ( that is equal chance to loss or win).
To approach this situation, you have to define an agreement with the janitor. The agreement should be "send me the chemistry master and I will pay you after I have written the exam to confirm it is actually a chemistry master or pay you 1/10 of your amount if it is not, to compensate your efforts". After sending this agreement, you should focused on your studies like you're not expecting a positive response from him.
Negotiation should not be involved in the agreement, as it will waste your time of studies.
Answer:
Water because it's a neccessity
Explanation:
All neccessaties have inelastic demand because humans can't live without them.
The other goods are luxuries and they have elastic demand. they are wants
Answer:
volume the pattern of spacing among in
Explanation:
Population dispersion may be defined as the different pattern of spacing of the population existed in one place.
It shows the various patterns or ways in which people are placed at different location at a certain locality.
Population dispersion also known as distribution pattern explains the occupying space of the members of the populations is related within a habitat.
Thus the answer is volume the pattern of spacing among in.
From what I remember, China was ruled by a series of emperors
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