Issac just completed his master’s degree in regional planning, if he wants to continue his education even further, he could pursue his degree.

Idk for this one pal

In  microbiology, pure culture is a laboratory  culture  containing a single  species  of organism. it is usually derived from a mixed culture. pure culture transfers a small sample into new, sterile  growth medium  in order  to distribute the individual cells across the medium surface. it separates the individual cells. when the cells multiply, each will form a colony and it then may  be used to inoculate more medium.