The human brain can be divided into three<span> main parts: the forebrain, midbrain, and hindbrain: 1/ The forebrain includes the several lobes of the cerebral cortex that control higher functions.</span>
In order for cells to become whole organisms, they must divide and differentiate. Cells divide all the time. That means that just one cell, a fertilized egg, is able to become the trillions of cells that make up your body, just by dividing. Those trillions of cells are not all the same though.
Just a little while after you started out as a fertilized egg, your cells started performing specific tasks, even started to look different because of that. Differentiation means that one cell performs a different function than another cell, depending on where it is in your body.
Not sure if this will help.
Commensal bacteria are friendly bacteria in the large intestine.
These bacteria produce Vitamin K and Biotin (a B Vitamin). The bacteria may be
a source of these vitamins, but if a person depends solely on the bacteria for
these vitamins, the person may become vitamin-deficient especially if they are
treated with antibiotics that can kill commensal bacteria.
1. Crude oil is a light oil and is volatile. That's what makes it evaporate very fast.
2. They measure it's Reserve-to-production ration or R/P.
you may want to check ur tutorials again