A star can be classified according to the following: main sequence, giants, and supergiants. On the other hand, the spectral class of a star is classified according to their temperature, absolute magnitude and solar luminosity.
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<span>Based on an existing classification, a star with an identified spectral class of M2 and a magnitude of +15 would be classified as a main sequence star.</span>
Answer:
Qatar terminated its membership on 1 January 2019. This means that, currently, the Organization has a total of 13 Member Countries. The OPEC Statute distinguishes between the Founder Members and Full Members - those countries whose applications for membership have been accepted by the Conference.
Explanation:
Conversely, for every time zone boundary you cross going east, you add one hour. Because Earth is round, if you continue to travel in one direction, you will eventually return to your starting point, and you would have set your watch forward or backward a full day.
A dune<span> is a mound of </span>sand<span> formed by the wind, usually along the beach or in a desert. </span>Dunes form<span> when wind blows </span>sand<span> into a sheltered area behind an obstacle. </span>Dunes<span> grow as grains of </span>sand accumulate. Sand dunes<span> serve an important purpose by protecting inland areas from coastal water intrusion. They are able to absorb the impact and protect inland areas from high energy storms and act as a resilient barrier to the destructive forces of wind and waves.</span>
