The main highlight of the application is that you can, after reading and learning something new, immediately check or consolidate your knowledge. And if you accidentally close the app, no problem! The app remembers where you left off. This will allow you to resume reading later or continue to check your knowledge from the same place where you left off. However, what is read and chosen will always start from the very beginning. Read phenomena / facts / stories can be added to favorites, as well as copied.
You can check your knowledge in 3 modes: match a tree or plant to a phenomenon/fact/story, or pick up a phenomenon/fact/story in a mirror opposite to a plant or tree, or answer "true" or "false" in the same mode. In each of the 3 modes, you can start over, and at the end you will see the percentage of correct answers.