Q: Fact 1: Digestion is the process of breaking down food into components the body can absorb. Fact 2: Lack of salvia hinders digestion. Given the two facts above, lack of which of the following can hinder the break down of food in the body? | OPTIONS:
- acid rain
- water
- salt
- Weight
- chemicals
- recycling
- sun
- saliva
A: saliva

Q: Fact 1: Pathogens can cause disease. Fact 2: Bacterial pathogens accounted for 83 outbreaks (8,928 pathogens). Given the two facts above, what can cause disease? | OPTIONS:
- bacteria
- medicine
- healthcare
- Pesticides
- viruses
- influenza
- toxins
- fish
A: bacteria

Q: Fact 1: Thirst is used to make an animal realize that it needs to replenish its bodily water by the body. Fact 2: An example is H2O which shows water is made of two atoms of hydrogen stuck to one atom of oxygen. Given the two facts above, thirst shows an animal that it needs what? | OPTIONS:
- CO2
- H2O
- He
- food
- feed
- urea
- O2
- H20
A: H2O

Q: Fact 1: Nuclear reactions in stars causes stars to produce light. Fact 2: Light contains energy. Given the two facts above, what do nuclear reactions in stars cause? | OPTIONS:
- heat energy
- Change colors
- production of energy
- hydrogen and oxygen
- only black holes
- destruction of energy
- creation of life
- harmful substances
A: production of energy