what is the primary role of the normal, thriving intestinal bacterial population?

Gut microbiota or gastrointestinal microbiota or gut flora refers to the composite community of microbes, which thrive in the digestive tracts of humans and other species, like insects. The gut metagenome is the aggregate of all the genomes of the gut microbiota.

The main function of the normal, living intestinal bacterial population is to assist in inhibiting the infectious bacteria from attacking the system.

chlorophyll a: this is the most abundant pigment in plants. chlorophyll a absorbs light with wavelengths of 430nm(blue) and 662nm(red). it reflects green light strongly so it appears green to us.