The main difference between asteroids<span> and </span>comets<span> is their composition, as in, what they are made of. </span>Asteroids<span> are made up of metals and rocky material, while </span>comets<span>are made up of ice, dust and rocky material. Both </span>asteroids<span> and </span>comets<span> were formed early in the history of the solar system about 4.5 billion years ago.</span>
Answer:
The correct option is:
This scale rates an earthquake according to how much damage it causes.
Explanation:
The Mercalli Scale was invented by Giuseppe Mercalli in 1902. It is not considered that much of a scientific method to measure to measure strength of an earthquake.
Mercalli scale uses the observation of people who experienced the earthquake, to estimate the intensity. Its measurement is based on how much effect or damage it causes to the humans, objects, buildings, and other man made things.
It is not considered a good way to measure intensity of earthquakes because some witnesses may exaggerate the effects while some may consider it nominal.
Answer:
This difference exists because of the Earth's slight elipsoid shape.
Explanation:
This difference exists because of the Earth's slight elipsoid shape.
Due to this reason, the measurement of a degree of longitude is given by the following formula.

In which
is the length in degrees at the Equator and La is the latitude(in degrees).
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