Usually the water begins to get murky after 3-5 days since the last cleaning. But I would honestly clean it whenever you think it looks like it needs cleaning. I have a beta fish as well, his name is Arkay.
I think the answer is A
Psychological
Explanation:
Development of a society is a universal process because it is impossible for any society to remain unaffected by other societies. Especially with the globalization and rate of interconnectivity we have in today's world, anything that happens anywhere in the world affects us. With MNCs opening up food and clothing chains, we are encouraged to wear and eat things that were not part of our culture at one point. Though this is often seen as a negative phenomenon, in my opinion, it is actually good. With different influences by different cultures, our societies become more open-minded and can see things from varied perspectives.
Answer:
Hypothalamus also is another factor that affects it
Deoxygenated blood comes into the right atrium via the superior vena cava.
