As a terms and a conditions, if they are using it solely for the promotion of the observations, that makes sense. It is an educational project, so they need the rights to be able to publish the observations made publicly. What do you see as the problem.

The part I like about it is that you can create a geographical project in one place. I find this extremely educational to understand not just the plants and animals of the area, but to start understand how different elements (such as temperature, weather changes, climate change, etc.) affect them. Plus, it provides reference material that can be used by other groups and organizations.