An entry-level forensic chemist must have a minimum of in order to obtain the job. a college degree and forensic experience a two-year college degree a phd in forensic science a four-year degree in communications and four years of practical experience on the police force

Option A

Explanation:

In order to opt for any entry level job in the field of forensic science or chemist, one is required to have a minimum of four years of college degree. As per the recommendations of  American Academy of Forensic Science(AAFS) , a degree in chemistry is required to apply for an entry level job of forensic chemist. Higher education is required for more specialized  position.

Hence, option A is correct.

Unique about the outer layer of the onion cell compared to the skin cell:

The presence of cell wall can be observed in onion cell while it lacks in the skin cell. The structure of the onion cell is like plant cell but in case of the human cell the structure is like animal cell. In case of the onion cell the outer layer has cellulose but when it comes to human skin cell the cellulose cell wall is absent. Due to the presence of cellulose the cell holds a definite shape but the human cell fails to maintain the shape as well as the rigidity.   The presence of chloroplast can be marked in the onion cell and again is absent in the human cell.