I feel the theme is to never give up on something you care about so much.
Answer:
because it shows how the seismograph is recording.
a seismograph is an instrument that measures and records details of earthquakes, such as force and duration.
Explanation:
just by looking at the image it shows people observing the seismograph measuring the environment around us which is what a seismograph does
and by doing so its able to predict abnormalities and predict earthquakes
Although it is not considered to be much, Maya Angelou's I Know Why The Caged Bird Sings is simply a literary masterpiece.
Answer: B. Salt and rust are corrosives that have damaging effects on a city’s infrastructure.
Explanation: in a text, a main idea is important information that tells more about the overall idea of a paragraph or section of a text. In the given excerpt from "The City Without Us” by Alan Weisman we can see the description of how the salt used on the roadways on winter, is very corrosive because it eats steel, and it also says that with no people, there won't be salt, but there will be rust which is also corrosive. According to this information, the main idea of the paragraph is best represented by option B: Salt and rust are corrosives that have damaging effects on a city’s infrastructure.