The correct answer is:
D If the radiation were to leak out of the reactors, it could cause significant damage to living organisms.
In fact, ionizing radiation that leaks out from nuclear reactor is able to damage the DNA of living organisms, causing mutations and/or diseases like cancer.
Explanation:
Echoes occur due to the reflection of sound from any obstacle, but not all the reflected sound waves lead to the phenomenon of echo. For the echo to be heard it actually depends upon the human perception as well, human ears can encounter the difference between the sound wave directly form the source and the reflected sound waves only if there is a minimum time gap of one-tenth of a second. For this time gap in the atmosphere at normal temperature and pressure the obstacle must be at least 7 meters away from the sound source.
Answer:
sound waves
Explanation:
this is because sound waves are longitudinal waves, and longitudinal waves are waves that travel parallel to the direction of the wave motion
thus it cannot be light or electromagnetic waves but only sound waves
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it is violet , because it has the highest energy and fastest oscillation .
