Question: Fact 1: Immunodeficiency occurs when the immune system is not working properly. Fact 2: Iron deficiency causes anemia and it weakens the immune system. Given the two facts above, what can low iron cause?
OPTIONS:
- contamination
- Pollution
- decrease stamina
- harmful substances
- immunodeficiency
- the ground shaking
- cloudy and rainy weather
- Temperature changing
Answer: immunodeficiency

Question: Fact 1: Disease has a negative impact on an organism. Fact 2: Plants and animals are organisms. Given the two facts above, disease has a negative impact on?
OPTIONS:
- electronics
- fabrics
- plants and animals
- genetic diversity
- dirt
- our planet
- Abnormal cell growth
- genetic material
Answer: plants and animals

Question: Fact 1: Rain causes erosion. Fact 2: Rain is also known as precipitation. Given the two facts above, what causes erosion?
OPTIONS:
- rainfall
- the Moon
- precipitation
- vehicles
- ice wedging
- Venus
- Mars
- mouth of rivers
Answer:
precipitation