input: OPTIONS:
- Animal survival
- in the frog family
- fur and fat
- scarce resources
- hyperthyroidism
- competition
- food and shelter
- expenditures Now, answer this question: Fact 1: Having no natural predators increases population size. Fact 2: With an increase in population there is an increase in expenditures. Given the two facts above, what does having no natural predators increase?
A:
output: expenditures

input: OPTIONS:
- animals
- Salamander
- fur seals
- mammals
- alpacas
- a fish
- warm-blooded
- barnacles Now, answer this question: 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?
A:
output: Salamander

input: OPTIONS:
- h2o
- Oxygen
- H20
- Dew
- NaCl
- sodium chloride
- rain
- mountain ranges Now, answer this question: Fact 1: Fog is formed by water vapor condensing in the air. Fact 2: Components of water (H2O) 2. Given the two facts above, what kind of vapor condenses to form fog in the air?
A:
output:
h2o