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.
C. Radioactivity
is the answer
and Uranium is an element that produces radioactivity
Answer: passive transport requires chemical energy to move nutrients from areas of low concentration to areas of high concentration
Explanation: