You are presented with the quiz "In order to attract flies, wasps, and bees, what does a flower employ?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "petals attract pollinators to the flower" and "pollination is by flies, wasps, and bees". So, what's the best answer to the question?

OPTIONS:
- petals
- colors
- insects
- camouflage
- Energy
- scentless
- lack of color
- pollen

Answer: petals

You are presented with the quiz "Which direction are planets pulled?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "gravity pulls objects towards planets" and "planets are 'held' in orbit by the Sun's gravity". So, what's the best answer to the question?

OPTIONS:
- an external framework
- Closer to their moons
- To the nearest source of darkness
- Away from the sun
- movement
- Towards the sun
- to move people
- unidirectional

Answer: Towards the sun

You are presented with the quiz "Frogs have a _-chambered heart." But you don't know the answer, so you turn to your teacher to ask for hints. He says that "amphibians have a relatively complex circulatory system with a three-chambered heart" and "all frogs are amphibians". So, what's the best answer to the question?

OPTIONS:
- alveoli
- organ
- ovaries
- oxygen
- edible
- three
- nektar
- CO 2

Answer: three

You are presented with the quiz "What causes contact between rocks?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "contact between rocks over long periods of time causes rocks to smooth" and "because of the big wave action, the rocks are very smooth". So, what's the best answer to the question?

OPTIONS:
- wind
- heat
- erosion
- deltas
- waves
- motion
- seasons
- rivers

Answer:
waves