Answer:
Substances generate a smell when their molecules land on so-called olfactory neurones in our noses (which, for some things, is a pretty unpleasant thought). ... But this fails to explain why some molecules with similar shapes can smell completely different, while others with quite different shapes can have a similar scent.
Explanation:
I took chemistry
The temperature at which a given solid will melt is called melting point.
The melting range is the span of temperature from the point at which the crystals first begin to liquefy to the point at which the entire sample is liquid.
Different layers makes the most sense due to the fact it can’t be a dry climate because of the vegetation, also there is a lot of plants so minimal plants isn’t an option, and the temperature in a rain forest is usually very humid so cold temperatures can’t be an answer.