input: OPTIONS:
- A yellow star
- Time and energy
- energy of moving objects
- A natural satellite
- flow of electrons
- An artificial satellite
- A red star
- hydrogen and oxygen Now, answer this question: Fact 1: The gravitational pull of the Moon on Earth 's oceans causes the tides. Fact 2: Planetary moons are natural satellites. Given the two facts above, the pull of what on the Earth's oceans cause the tides?
A:
output: A natural satellite

Fact 1: Vertebrate chordates have a backbone. Fact 2: Because reptiles are vertebrates, they are chordates. Given the two facts above, what has a backbone?

OPTIONS:
- reptiles
- four limbs
- humans
- the Sun
- bacteria
- insects
- sponges
- elephants

Answer: reptiles

Problem: OPTIONS:
- Acids
- tar
- Energy.
- heat
- Gases
- gas
- sweat
- energy
Q: Fact 1: Operating an automobile usually requires fossil fuels. Fact 2: Automobiles and the burning of fossil fuels generate gases such as sulphur dioxide. Given the two facts above, what does an automobile create when it burns fuel?
Answer: Gases

Problem:OPTIONS:
- barnacles
- fish
- fur seals
- animals
- adult sponges
- chickens
- gazelles
- birds

Fact 1: Adult sponges are sessile. Fact 2: Most echinoderms are sessile or sedentary marine forms with radial symmetry as adults. Given the two facts above, what are sedentary?
****
A: adult sponges

Fact 1: Most salamanders use their sense of smell to find a mate. Fact 2: Food to survive, mates to reproduce, and water to drink. Given the two facts above, in their quest for reproduction, salamanders are assisted by their what?
OPTIONS:
- animals
- kinetic energy
- sense of irony
- taste in clothing
- fur and fat
- sense of smell
- chameleon
- insects
sense of smell

Fact 1: Biofuel is used to produce electricity by burning. Fact 2: Any green plant can be considered for use in the production of biofuel or bioenergy. Given the two facts above, what can a plant be used to produce when it's burned?
OPTIONS:
- toxins
- energy
- sun's heat
- carbon dioxide
- kinetic energy
- heat energy
- adding heat
- Electricity

Answer:
Electricity