They change shape due to a number of reasons.
The easiest reason to understand why they change is that they erode.
The coasts around the the world erode due to waves hitting cliffs, the wind batting against the coasts etc. Over a long period of time we can see that they change in shape.
(sorry I don't know why they move)
The answer is B because an autobiography is a real life story written by that person.
Stage 1- Stars are born in a region of high density Nebula, and condenses into a huge globule of gas and dust and contracts under its own gravity.
This image shows the Orion Nebula or M42 .
Stage 2 - A region of condensing matter will begin to heat up and start to glow forming Protostars. If a protostar contains enough matter the central temperature reaches 15 million degrees centigrade.
This image is the outflow (coloured red)and protostar.
Stage 3 - At this temperature, nuclear reactions in which hydrogen fuses to form helium can start.
Stage 4 - The star begins to release energy, stopping it from contracting even more and causes it to shine. It is now a Main Sequence Star.
The nearest main sequence star to Earth, the Sun
Stage 5 - A star of one solar mass remains in main sequence for about 10 billion years, until all of the hydrogen has fused to form helium.
stage 6 - The helium core now starts to contract further and reactions begin to occur in a shell around the core.
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What is the underlined word so i can understand the question better?
The correct answer is C. To get different points of view on the news.
Even though news are often based on the same facts, events can be perceived from different perspectives. These different perspectives or angles are translated into the news and give as a result different points of view. These differences rely heavily on the ideology and the interests each source represents and stands by.
So, as the manner in which information is presented may vary because they are subject to the standpoint from which each source looks at the event, we should get the news from different sources to create our own critical opinion about events.