<span>A. The nebula contracts and shrinks instead of expanding
</span><span>Nebula is the cloud of interstellar dust and gas that forms a star. It is collborately shaped during colliding and collapsing of the interstellar mediums this is influenced by the gravitational attraction of the atoms and particles in the entites. Hence, there are three types of nebular namely, are classical nebula, diffuse nebula, planetary nebular and supernova remnants.</span>
Answer:
The nervous system has two main parts:
The central nervous system is made up of the brain and spinal cord.
The peripheral nervous system is made up of nerves that branch off from the spinal cord and extend to all parts of the body.
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Answer:China is officially known as the People's Republic of China.
China has the largest population in the world, with over 1.3 billion people (1,343,239,923) as of July 2012.
China is the 3rd largest country by area at 9,706,961 sq km (3,747,879 sq miles).
China belongs to the continent of Asia.
Explanation:
