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A merit good is a good which has positive externalites and therefore people do not consume enough of them. For example, vaccinations.

A public good has two characterisitics, it is non-rival: this m...

To address this question, you should state why you have decided to study French. 

Quels sont vos motivations, par exemple? La culture? La langue? Le pays? Est-ce que vous avez déjà visité la France...

Population from low-income countries tends to migrate to high-income countries because of different factors:

-They offer a better lifestyle.

-They offer better studies also, it is where you ...

Melting point, NMR, Mass spectrometry, IR spectroscopy

I would then go through with the student and explain that an alkane is a hydrocarbon made up of single carbon-carbon bonds only. This is why butane ends in -ane, it begins with but- due to the number of c...