The correct answer is hydroxyl, isopropyl and a methyl groups. And menthol is a tri- substituted cyclohexane btw.
hope this helps if my answer is wrong let me know.
The correct answer is - 1) inverted pyramid, with a narrow base representing a small number of young individuals.
The populations that are decreasing are usually population in countries that are highly developed. The conditions for living are excellent, the medical care on high level, life expectancy very high, but the birth rates very low.
In this type of conditions, there's smaller and smaller number of young individuals, with the middle aged population being much bigger, and the older population being constantly on the rise. This will give the age-structure histogram a reverse shape than what it is supposed to have, it will be similar in appearance like a inverted pyramid, meaning that the population is aging and that it will be constantly on a decline in the future.
In order to prevent bacteria and fungi from reducing the volume of organic matter, coal must experience rapid, anaerobic burial.
