Fleas on Rats
Bubonic plague is usually transmitted by infected fleas. These fleas typically live on rodents, in particular rats.
xenopsylla cheopis is the scientific name of the flea that is the vector for Yersinia pestis, which is the bacteria that causes bubonic plague.
It was a bacterium that caused it, but rats and fleas between them were the vector which spread the disease.
The disease is transmitted from animals to humans.Plague infects wild rodents, especially rats, and is transmitted animal to animal and occasionally to humans by flea bites. The flea is the vector.
The Oriental rat flea (Xenopsylla cheopis) is a parasite of rodents, primarily of the genus Rattus, and is primary vector for bubonic plague and murine typhus.
Vectors play very important role in spread of many diseases. The microorganism spends dominant or recessive stage of it's life cycle. Without the vector the disease can not spread in most of the cases. Malaria and plague are two important vector born diseases.
A vector in Biology is a carrier /transporter of a virus fungi or bacteria. For example a plasmid is a vector that carries genetic information to a cell, and the mosquito is the vector of the malaria causing parasite.
Yes, a vector can be represented in terms of a unit vector which is in the same direction as the vector. it will be the unit vector in the direction of the vector times the magnitude of the vector.
Yes, they did get sick from the plague, in fact they were one of the animals in the chain of links which enabled us humans to catch the plague, (from the flea bites the rats were getting). In general this was bad for all the countries affected by the black death as it would leave the villages, towns, cities etc in a bad condition, which could cause even more disease in the long run.
NULL VECTOR::::null vector is avector of zero magnitude and arbitrary direction the sum of a vector and its negative vector is a null vector...
90 degrees
That is usually called the resultant vector.