a genus of gram-negative, aerobic, rod-shaped bacteria whose organisms are part of the normal flora of the mucous membranes of the upper respiratory tract. Some species are pathogenic for man.
You will also like...
Following nine months inside the mother's womb is the birth of the baby. Know the different stages of the birthing proce..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..
The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..