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.
An Introduction to Army Ants. There are over 200 different known species of army ant. Eciton burchellii is one of the most studied species, and has typical army ants characteristics. They are very aggressive and can tackle among some of the largest prey. They rest in temporary nests made entirely of ants, also known as a âbivouacâ. The queen ant and her brood stay safe in the centre of the mass of ants.