FHSS vs DSSS. Spread spectrum is a group of techniques that utilizes a much larger bandwidth in transmitting information than would otherwise occupy a fraction of the bandwidth used. This is done to achieve a certain effect.
Quick Answer. In the wild, black rhinos live for 30 to 35 years, whereas white rhinos live for as many as 50 years. Other species of rhinos live for 30 to 40 years. Rhinos typically live longer in captivity than they do in the wild.
There are five species of rhinos  two African and three Asian. The African species are the white and black rhinos. Both species have two horns. Asian rhinos include the Indian and the Javan, each with one horn, and the Sumatran, which has two. The white rhino is the second largest land mammal next to the elephant. The five species range in weight from 750 pounds to 8,000 pounds and stand anywhere from four and a half to six feet tall.