REVISION DE CCNN Y MATE PARA SÉPTIMO DE LA THO

http://es.wikipedia.org/wiki/Tropismo

https://www.google.com.ec/sea

https://www.youtube.com/watch?v=y2Yhg79KaIo

https://www.youtube.com/watch?v=9d1yXxvtLoQ

https://www.youtube.com/watch?v=EpBFuSVh5zY

https://www.youtube.com/watch?v=JUEson1cpyo

https://www.youtube.com/watch?v=2Ro8HBilpYw

https://www.youtube.com/watch?v=9kPI78Kg288

https://www.youtube.com/watch?v=xixL9r2qCWs