Carbon monoxide is not heavier than air. A carbon monoxide alarm should be installed in a location where the alarm will stay clean, and out of the way of children or pets. Refer to the user's manual for specific installation requirements. Â« Back To FAQs List.
A leech is an annelid or segmented worm related to earthworms. Most are aquatic although there are land leeches in the tropics. Some leeches are blood sucking parasites bu â¦ t others are predators.
Leeches (Hirudinea) Leeches are a class of segmented worms closely related to aquatic earth worms that live primarily in freshwater, although some marine and terrestrial species exist. Leeches have a somewhat soft, very muscular body that is flattened from top to bottom. They range in length from 4-450 mm.