View Larger Image Invisible Pathogensadmin2017-01-25T09:53:09-05:00 Project Description Project Details Categories: Microbiology Share This Lesson! facebooktwitterreddittumblrpinterestEmail Related Projects http://studentsdiscover.org/teaching-modules/symbiosis-in-the-soil/what-is-soil/ What is Soil? http://studentsdiscover.org/teaching-modules/symbiosis-in-the-soil/diggin-dandelions/ Diggin’ Dandelions http://studentsdiscover.org/teaching-modules/belly-button-biodiversity/ Belly Button Biodiversity