Answer:
B) Developer is poured down the drain while fixer can be reduced
Explanation:
The effluents produced during photographic processing includes, wash water, bleach, fixer, and developer
The developer is an alkaline solution, with a pH of approximately 10.0, while the pH of the fixer is about 4.3, it is therefore, acidic
The rate of discharge of the developer to the fixer is 2 to 1, and the exhausted developer, fixer and process effluents combined are neutral and can be handle by the the treatment works and the drain pipes
Fixer which remain clear can be reused for more than a day, while the spent basic Developer and the acidic Spent Stop Bath can be combined to form a neutral solution, having a pH of approximately 7, which make them less hazardous to be disposed off down the sink into the drain
Therefore, <em>developer is poured down the drain while fixer can be reused</em>
Hi, I provided you a general guide on how to go about your writing your research paper.
<u>Explanation:</u>
Note, the current APA (American Psychological Association) format is the <em>APA 7th Edition. </em>This format details how a researcher should state the findings, sources, conclusion, etc.
Hence, you can begin writing the assigned paper only after gathering the needed data.
Answer:
Object-oriented programming
Explanation:
When used in object-oriented programming , a class is a factory for creating object. An object is a collection of data and behavaiors that represent some entity(real or abstract).
The main factors that led to the fall of the Aksum in the seventh century were climate change and the obstruction of international trade routes around the Red Sea brought on by the growing supremacy of the Muslims in Ethiopia.<span> Other contributing factors included a reduced crop yield due to excess cultivation of land, Persian interference and the rise of Christianity in the region.</span>
