After spending approximately 40 weeks inside the womb, the average newborn weighs 7 1/2 pounds. Most babies weigh between 5 1/2 and 10 pounds. The average length of a newborn is 20 inches (50 centimeters), with a range of 18 to 22 inches. The average head circumference (the distance around the head) is 14 inches (35 centimeters).
Lactobacillus and Bifidobacterium are the most common probiotic bacteria. The Lactobacillus genus has 18 different bacteria strains, while the Bifidobacterium genus consists of eight strains.
Bacteria Autotrophs. Next we have the tiny organisms called bacteria. Like plants and algae, bacteria can also be autotrophic. Let's examine three tiny bacteria autotrophs. Cyanobacteria. Probably one of the most important types of bacteria, cyanobacteria are known to be aquatic and live in large colonies.