Uploaded on 2016-04-30 by manuel721

![silk butterfly][1] b. regulation ![food chain][2] c.habitat ![bee pollinating][3] d.cultural ![turistic flows][4] [1]: http://www.gusanos.info/pic/capullos-seda.jpg [2]: http://www.agenciasinc.es/var/ezwebin_site/storage/images/multimedia/fotografias/nuevos-estudios-muestran-que-los-cultivos-modificados-geneticamente-no-perjudican-a-los-insectos-beneficiosos/3195269-3-esl-MX/Nuevos-estudios-muestran-que-los-cultivos-modificados-geneticamente-no-perjudican-a-los-insectos-beneficiosos_image800_.jpg [3]: http://www.abejapedia.com/wp-content/uploads/2014/07/honey-bee.jpg [4]: http://www.eluniversaledomex.mx/fotos/edomex_mariposa_monarca_int_1.jpg