C: circular.
The Hubble sequence is a form of classification of galaxies invented by Hubble in 1926. The sequence divides galaxies into three main categories: lenticular, elliptical and spiral. There is a fourth category that is called irregular, where there are the galaxies that do not fit the characteristics to be included in the three previous categories.
This categorization is the most used even today by both amateurs and astronomers.
Answer:
while development activity there is a threat to industry because when there is development there is chance of establishing other industries which directly affects other industries
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The correct answer is Plato
Plato is responsible for having access to the thoughts of several ancient Greek philosophers, such as Socrates, his master, Heraclitus, Parmenides and Pythagoras. Plato was also the introducer of the method of dialogue in philosophy and with his work The Republic founded Western political philosophy.
Plato was one of the most aware philosophers of how philosophy should be conceived and what its scope should be, and what ambitions the philosopher might aspire to. In fact, Plato can be considered the inventor of the theme of philosophy, what it actually deals with, having philosophy as a rigorous and systematic examination of ethical, political, metaphysical and epistemological issues through a distinctive method.