(Question)
Fact 1: Plants exhibit phototropism, or growing toward a light source.  Fact 2: Green plants use light as their primary energy source.  Given the two facts above, answer the question "Phototropism means growing toward what?" with the following options:  - rocks  - energy  - retina  - light  - heat  - The Sun  - plants  - sand
(Answer)
light


(Question)
Fact 1: Adoorbell converts electrical energy into sound.  Fact 2: Electricity is a kinetic energy.  Given the two facts above, answer the question "A doorbell converts _ into sound" with the following options:  - a hydraulic system  - rays or beams  - deoxyribonucleic acid  - kinetic energy  - encoded information  - sensory neurons  - circulatory systems  - Loud noises
(Answer)
kinetic energy


(Question)
Fact 1: Alight bulb is used for seeing in the dark.  Fact 2: Humans are unable to see clearly in the dark.  Given the two facts above, answer the question "What helps humans see?" with the following options:  - layers of fat  - electricity  - food  - focusing a lens  - shadows  - dolphins  - Light bulbs  - pets
(Answer)

Light bulbs