What is the tone of the passage if must be, if the nebular hypothesis has any truth, older than our world; and long before this earth ceased to be molten, life upon its surface must hav begun its course. the fact that it is scarcely on seventh of the volume of the earth must have accelrated its cooling to the temrature at which life could begin. a formal and scientific b hysterical and emotional c happy and carfree d frightned and confused

To identify the tone of a fragment we must look at its writing style. For example, formal texts generally use a writing style in which they include technical and embellished words.

Informal texts, on the other hand, use simple language that everyone can easily understand. Additionally, the informal texts do not use specialized terms from any area nor do they refer to complex topics.

According to the above, it can be inferred that the tone of this fragment is formal due to the fact that it uses a complex and stylized language. Additionally, it is scientific because it refers to a scientific topic in which the reader must have prior knowledge to understand some ideas of the text.

Learn more about text tone in: https://brainly.com/question/23395598

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