"What is human nature?" is the key question psycology seeks to answer
The correct answer is d. "Regeneration" means "forming new cells," and signifies that the disease-causing bacteria cells are multiplying. When there are more of these cells, there is a higher chance for antibiotic resistance (making it take longer for the antibiotics to work). Once there is a smaller concentration of these bacterial cells, the antibiotics become more effective.
Answer:
The reason why it occurs is when the organism doesn't have the desirable traits it needs to survive.
Explanation:
