Tenacious qualities necessary for a historian
Answer:
limestone is an example of organic sedimentary rock
They are electromagnetic waves because mechanical waves have to be physically created by something, while electromagnetic waves are just emitted without any effort or force.
Answer:
Virus's,
there would be stealing too
Explanation: The silk road was one of the largest roads built for trading across countries and as they traded the virus's were spreading there was also I really bad type of virus's but I forgot the name. I think you should research about it to get more points and i think this is history related not geography. Enjoy.
Answer:
A
Explanation:
estuary is the tidal mouth of a large river, where the tide meets the stream.