Concentrations above 5ppm in air can cause serious problems. You might want to look at this paper, if only to see that, commercially, HCl solutions have another name which can be misleading, Muriatic Acid. What happens if muriatic acid fumes are inhaled?
Answer: A palapa is a thatched-roof, open-sided structure (see palapa photo). The material to cover the roof of a palapa typically consists of dried and woven palm-tree leaves. A palapa is sometimes referred to as a grass or tiki hut.
When a man tells a woman she's guapa, is he saying she's simply attractive or that she's pretty. It may seem dumb - but to me, there's a difference between the two and being called pretty is really great. There are degrees of compliments. Ie: cute, attractive, pretty, and finally - beautiful.