Answer:
C) got married; got on stagecoach; Kalydor discovered; stagecoach overturned
Explanation:
I took the usatestprep test trust me its right
Answer:
i suggest u take a guest because i do not have the chart
Explanation:
Answer:
hertz
Explanation:
Usually frequency is measured in the hertz unit, named in honor of the 19th-century German physicist Heinrich Rudolf Hertz. The hertz measurement, abbreviated Hz, is the number of waves that pass by per second. For example, an "A" note on a violin string vibrates at about 440 Hz (440 vibrations per second).
Lifeguards must have current CPR, First Aid, and AED certifications.