Following are the singular and plural nouns in the sentence.
astronauts -P
crowd - S
<h3>What are the examples of singular and plural nouns?
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The majority of singular nouns can be made plural by adding a -s to the end. Depending on what letter a noun finishes in, pluralization rules can vary greatly. Irregular nouns must be learned or looked up in a dictionary because they do not adhere to the plural noun rules.
1. Add 's' to the end of normal nouns to make them plural.
cat – cats
2. Add the letter "es" to the end of the singular noun if it ends in s, ss, sh, ch, x, or z to make it plural.
Trunk - Trunks
bus - buses
To learn more about singular and plural nouns from given link
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I think it is postmodernism
In the Middle Ages, most people lived in villages and worked as agricultural laborers, or peasants. Every village had a “lord,” and peasants worked on his land. Much of what they produced went to the lord and his family. What little food was leftover went to support the peasants’ families. In return for their labor, the lord offered them protection. A peasant’s day usually began before sunrise and involved long hours of backbreaking work, which included plowing the land, planting seeds, and cutting the crops for harvesting. The working life of a peasant in the Middle Ages was usually demanded and exhausting.
Answer:
Will Human Life on Earth Come to an End?, Seventh Grade ...www.readworks.org
Explanation: