Q: Fact: magnetic attraction pulls two objects together
Question: An attraction may be magnetic if
OPTIONS:
- two metals are placed together
- substances find one another irresistible
- nickel is in a metal rod
- iron and nickel are in a bowl

A: substances find one another irresistible

Q: Fact: all living things eliminate waste
Question: What doesn't eliminate waste?
OPTIONS:
- plants
- mushrooms
- bacteria
- robots

A: robots

Q: Fact: when light enters the eye through the pupil , that light falls on the retina
Question: When light enters the eye through the pupil the light falls on the what?
OPTIONS:
- brain
- optic disk
- retina diagram
- nose

A: optic disk

Q: Fact: when a sound is produced inside of a room , there is sometimes an echo after the sound
Question: When a sound is produced inside a room, sometimes there is a
OPTIONS:
- light
- electric charge
- delayed reflection
- video

A:
delayed reflection