The 3rd one is the answer
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.
Answer:
To prove that the platform does not exist
Explanation:
Answer: he said building the windmill will take time and effort away from the more important task of producing food.
Explanation:
Remember a cause is something that happens, and an effect is something that changes because of it. Example:
Cause: George was sick
Effect: He couldn't come to the sleepover
Birds migrate south because food supplies become scarce and the cold winters make survival harder, so they migrate closer to the equator, where temperatures are warmer.
Cause: Winter arrives, making survival difficult
Effect: The birds move south for the winter season
Remember: The cause is an event that happens, and an effect is something else that happens because of it.
