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.
Pill bugs have a hard exoskeleton that protects them from predators and desiccation. Jupiterimages/Photos.com/Getty Images. Pill bugs -- also known as roly-polies or wood lice -- are terrestrial crustaceans known to scientists as isopods.Scientists have documented the existence of over 10,000 species, living on the ocean floor, high in the mountaintops and in every habitat between the two.ill bugs have a hard exoskeleton that protects them from predators and desiccation. Jupiterimages/Photos.com/Getty Images. Pill bugs -- also known as roly-polies or wood lice -- are terrestrial crustaceans known to scientists as isopods.