Question: You are presented with the quiz "What can happen when menstruation stops occurring?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "menopause occurs when menstruation stops occurring, usually in middle adulthood" and "hot flashes are the classic sign of menopause and peri-menopause". So, what's the best answer to the question?
OPTIONS:
- Localized damage
- Dehydration
- periods
- diabetes
- massive damage
- hot flashes
- Sulfur dioxide
- epilepsy
Answer: hot flashes

Question: You are presented with the quiz "What is bad for ecosystems?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "cutting down trees has a negative impact on an ecosystem" and "and, trees provide habitat for birds and animals". So, what's the best answer to the question?
OPTIONS:
- Pesticides
- deforestation
- harmful substances
- Studying animal populations
- Removing pollutants
- Pollution
- Fighting climate change
- Removing habitats
Answer: Removing habitats

Question: You are presented with the quiz "what is natural?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "aging is associated with the death of cells" and "cell death is natural". So, what's the best answer to the question?
OPTIONS:
- Spruce
- artificial sweetener
- aging
- wetland
- fake purses
- wind
- imitation crab
- Light
Answer:
aging