Further Reading

Learn more about the Push-Pull system: http://www.push-pull.net/

R. Kwok. “Weed Wars.” Science News for Kids. Dec. 7, 2011.

R. Kwok. “Secret Signals.” Science News for Kids. Jan. 15, 2013.

R. Kwok. “Sniffing out truffle scent.” Science News for Kids. April 30, 2012

S. Ornes. “Deep-down worm is far out.” Science News for Kids. June 15, 2011

Teacher’s questions: Questions you can use in your classroom related to this article.