Why are ventilation systems in high-rises more complex than in smaller buildings?

high-rises do not have chimneys.
high-rises often have sealed windows.
the stack effect is reversed in high-rises.
cigarette smoking is more common in high-rises.
i really need

Ajewelry direct sales company pays its consultants based on recruiting new members. question 1 options: the company is running a pyramid scheme, which is illegal. the company is running a pyramid scheme, which is legal. the company has implemented a legal and ethical plan for growth. the company uses this method of compensation to reduce the fee for the product sample kit.

On january 1, 2017, sophie's sunlounge owned 4 tanning beds valued at $20,000. during 2017, sophie's bought 3 new beds at a total cost of $14 comma 000, and at the end of the year the market value of all of sophie's beds was $24 comma 000. what was sophie's net investment

Amap from a trade development commission or chamber of commerce can be more useful than google maps for identifying