Top. A horizontal asymptote is a y-value which a function approaches. The asymptote is parallel to x axis, so is of the form y = a, for all real values of a. Thus if f(x) = y is a function, then y = a, becomes undefined for the function, then the line y = a, is called the asymptote for the function y = f(x).
The African armyworm (Spodoptera exempta) also called okalombo, kommandowurm, or nutgrass armyworm, is an African moth. It is a very deleterious pest, capable of destroying entire crops in a matter of weeks.
Reference: Ohio State University Extension. The earthworm has many enemies, including mites, ants, centipedes, earwigs, nematodes, fly larvae, termites, springtails, sowbugs, snails, slugs, millipedes, spiders, birds, rats, mice, moles, gophers, toads and snakes.The best method to avoid problems is to not overfeed your earthworms.lthough live, healthy worms are not harmed; the injured or dead ones are eaten. These mites can become so populated that most of the food is eaten in one night. After wetting the bed, mites swarm to the surface, often covering the entire bed. Red mites are parasites that suck earthworm blood while they are attached.