Response is an important characteristic of life. Anything that causes a living organism to react<span> is also called the stimulus,</span><span>t helps the organism to stay in balance.</span>
Answer: Microscopic creatures—including bacteria, fungi, and viruses—can make you ill. But what you may not realize is that trillions of microbes are living in and on your body right now. Most don't harm you at all. In fact, they help you digest food, protect against infection, and even maintain your reproductive health.
Explanation: Hope you have found what you're looking for. Have a nice study time.
Answer:
maybe B. because it occurs because of human water pollution
Charles Darwin is the right answer and he worked mainly on the Galapagos islands.