A scientist looking at a chemical reaction in an experiment A doctor watching a patient after administering an injection An astronomer looking at the night sky and recording data regarding the movement and brightness of the objects he sees A zoologist watching lions in a den after prey is introduced to determine the swiftness of the animals' response Air flight controllers watching their monitors for airplane movements and locations A meteorologist watching the Doppler radar as a storm approaches A botanist recording daily data on plant growth after looking and measuring each day A chart showing data collected over time A doctor watching a patient's reaction to a medication
