Newsela article "Endgame: Avengers" Thanos

2. Live in digestive tract and serve 3 functions: breaking down food, help our immune system. and help fight pathogens directly.
5. Person who studies insects.
8. Dead human body.
12. Expert in the function of the immune system.
13. Relationship of living things to one another and surroundings.
14. Could take over if large mammals become extinct.
15. Tend to have fewer offspring and breed slower than small species.
16. Country that introduced sheep in the 1890's - but dung beetles could not break down the sheep waste.
17. Insect used to break down sheep waste introduced by George Bornemissza to Australia.
19. Meat eater.

1. Term for animal waste that insects help to break down.
3. Best known for his theory that population growth will always tend to outrun the food supply.
4. Gut living things that include bacteria, fungi, and viruses.
6. Reproduce quickly and are the source of diversity after a mass extinction.
7. Someone who knows a lot about something or is a fan of something.
9. To get rid of
10. Multiple universes.
11. The act of insects carrying plant pollen from plant to plant to allow for fertilization.
17. Variety
18. Retired as a farmer in the Endgame trailer.