Fact 1: Arteries generally carry oxygen-rich blood. Fact 2: Without a blood supply, people are in danger of dying. Given the two facts above, what can people die without?

OPTIONS:
- water
- h2o
- family
- retina
- love
- oxygen
- friends
- food

Answer: oxygen

Fact 1: Electrocution causes harm to an organism. Fact 2: Electrocution includes electric shock. Given the two facts above, what causes harm to an organism?

OPTIONS:
- cuddles
- cigarettes
- viruses
- causing love
- warm covers
- influenza
- electricity
- electric shock

Answer: electric shock

Fact 1: High pressure systems cause clear weather. Fact 2: High barometric pressure indicates clear weather. Given the two facts above, what causes clear weather?

OPTIONS:
- our nearest star
- electromagnetic energy
- looseness of dirt or compost
- Animal survival
- The area was once underwater
- evaporation
- barometric pressure
- windpower operated machines

Answer: barometric pressure

Fact 1: HIV infects and destroys helper T cells. Fact 2: HIV, the human immunodeficiency virus, is a retrovirus. Given the two facts above, what does the human immunodeficiency virus destroy?

OPTIONS:
- B cells
- bacteria
- helper T cells
- animals
- epidermis and dermis
- critical organs
- an organism's body
- cancer cells

Answer:
helper T cells