Problem:OPTIONS:
- Retina
- RNA
- calcite
- an object
- arteries
- energy
- squids
- segmented

Fact 1: When light enters the eye through the pupil , that light falls on the retina. Fact 2: Images are retained on the retina of a viewer's eye for a fraction of a second after they strike it. Given the two facts above, where are images retained?
****
A: Retina

Problem:OPTIONS:
- fibers
- eyes
- squids
- energy
- SNPs
- hawks
- fields
- Glass

Fact 1: Eyes are used for seeing by animals by sensing light. Fact 2: Light waves are electromagnetic waves. Given the two facts above, what are used for seeing by animals by sensing electromagnetic waves?
****
A: eyes

Problem:OPTIONS:
- Masks
- fur
- coats
- bald head
- increase body fat
- sweaters
- skin
- hair

Fact 1: Head hair is especially important in preventing heat loss from the body. Fact 2: Almost 90 percent of the body's heat loss is from the head. Given the two facts above, what can prevent 90 percent of the body's heat loss?
****
A: hair

Problem:OPTIONS:
- flowers
- leaves
- food
- sugar
- ducks
- plants
- honeybees
- mice

Fact 1: Aflower 's purpose is to produce seeds. Fact 2: Grain is the seed portion of the plants. Given the two facts above, what produces grain?
****
A:
flowers