input: OPTIONS:
- matter vibrating
- when it loses heat
- It gets heated up
- flow of electrons
- when it transfers heat away
- recovery time from fatigue
- when it conducts heat
- when it cools down Now, answer this question: Fact 1: When metal conducts heat , that metal expands. Fact 2: Steel is a solution of metals. Given the two facts above, when does steel expand?
A:
output: when it conducts heat

Fact 1: Amphibians have a relatively complex circulatory system with a three-chambered heart. Fact 2: Frogs, toads and salamanders are amphibians. Given the two facts above, which animal has a circulatory system with a three-chambered heart?

OPTIONS:
- animals
- Salamander
- fur seals
- mammals
- alpacas
- a fish
- warm-blooded
- barnacles

Answer: Salamander

Problem: OPTIONS:
- forces
- fats
- rockets
- cup
- Lift
- beaker
- volume
- scale
Q: Fact 1: Abalance is used for measuring mass of an object. Fact 2: Balancing connotes a set of scales. Given the two facts above, what can be used to measure mass?
Answer: scale

Problem:OPTIONS:
- ovaries
- saliva
- Energy.
- chemicals
- heat
- cooking
- cooking food
- matter

Fact 1: Digestion is the process of breaking down food into components the body can absorb. Fact 2: Saliva starts to break down the food. Given the two facts above, what does digestion involve?
****
A: saliva

Fact 1: Endospores are commonly found in soil and water. Fact 2: Some bacteria have specialized dormancy structure, the endospore . Given the two facts above, what are commonly found in soil and water?
OPTIONS:
- bacteria
- chlorofluorocarbons
- dormant bacteria
- gravity
- weathering
- hydrocarbons
- Organic compounds
- density
dormant bacteria

Fact 1: Erosion causes a river to become deeper and wider. Fact 2: Water and the Nile River are important to Egypt. Given the two facts above, erosion causes the Nile to become:?
OPTIONS:
- Sediment
- shallower
- less wide
- deeper and wider
- homogenous
- colder and wetter
- faster
- Physical weathering

Answer:
deeper and wider