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.
When you have finished this page, go to the Earthworms Quiz. Earthworms are the most highly developed worms. They are divided into segments or parts. They are found in salt and fresh water as well as in the soil.Earthworms are helpful to man as bait for fishing and more importantly, because they loosen the soil for roots to grow. There are 2700 species of earthworms.Earthworms have many enemies including animals that eat them and man who uses them.hey are divided into segments or parts. They are found in salt and fresh water as well as in the soil. Earthworms are helpful to man as bait for fishing and more importantly, because they loosen the soil for roots to grow. There are 2700 species of earthworms.