How does the descriptions of the markets in Stave 3 relate to the theme of the book?

martians or other types of aliens represent a unique fear as opposed to zombies. vampires and other types of monsters.   in most sci-fi stories, aliens come from other worlds and have different or more advanced technology.   abductions and experimentation on human bodies that involve these technologies, or the use of these technologies against human beings and the use of unknown "powers", are a type of fear that's different from that of other types of monsters.  

what are you

one context clue that me find the meaning of luxuriance was that the base word of luxuriance is luxury, so i think that luxuriance means something that is luxury, or something luxurious.

answer: producers

explanation:

they are producers because the use photosynthesis to collect sunlight and make food for themselves which when a animal comes around and eats it it becomes a food chain