The answer to your question is knowledge. Scientific knowledge is the information gathered by the systematic study of nature.
Two basic types of satellite images is the sun and moon.
The answer is A, it is the scientists belief that there was
a massive Colum of dust in the beginning. It formed to make the sun as its
central mass and some of it aligned around the central mass of sun. And the
gravitational pull of the mass kept the planets revolving around the sun.
Urbanization brings noise pollution due to a larger population. This can be seen as one challenge. Another challenge is pollution such as plastic, gases, noise, etc due to the larger population. Also a big challenge is danger. You do not know the people as much in a larger town, therefore the danger to you is a lot more prominent.
