Ecology and conservation biology contain numerous examples of
populations growing without bounds or shrinking towards extinction. For these
populations, the change in the number of individuals...
This video demonstrates how stems moves to remain upright in a process called gravitropism.
In this project, students can experience plants as responsive rather than passive organisms. Roots forage through heterogeneous media and proliferate in portions of the soil that have abundant...
© ESA 2001-2015 Creative Commons License | Leave Feedback