Answer:
D. fossil record
Explanation:
When animals and plants died in historical times , in some cases their remains were preserved as imprints on rocks. These constitute fossil records and provide lot of information about evolution of life. These fossil records when arranged chronologically in order of time, constitute a fossil record. Fossil Record provides a very valuable indirect insight about historical times to archaeologists.
Answer:
Because you could also receive shock
Explanation:
Automatic external defibrillators can help save lives during sudden cardiac arrest.
Do not touch the person while the AED is analyzing; touching or moving the person can affect the analysis. You or another person could be injured by shock. And you could prevent the AED from analyzing your heart rate correctly.
Edison revealed his incandescent light bulb on December 31, 1879<span>, in Menlo Park, California.</span>
