What is the evidence that learning is taking place?

What plate is getting significantly smaller? What are facts Kilauea volcano? How do you test for the virus presence? Can you name some carnivorous plants? What helps to move or climb suddenly? What language is antimony from? What is the smallest ethnic group in the world? What was Galileo horse powered water pump? What is the smallest in diameter a segmental bronchus the trachea the right main bronchus a lobar bron? What are the points called on each side of the prime meridian? When hurricanes first form in the northern hemisphere they usually travel from and later as they move to higher latitudes? Why is a polar body unable to support development of the embryo? Which city is situated on the estuary of Mississippi river? What is the largest continent that constitutes nearly one third of all landmass and lies predominantly north of equator? What two countries are located entirely within 0 and 10 north latitude 50 and 60 west longitude? If its 4pm in New York what time is it in Honolulu Hawaii? Is unpleasant an adjective? Japan is made up of a long chain of islands What do geographers call such an island chain? Satellites- like Galileo gps navigation satellites - orbit earth explain how gravity makes this happen? How is oxygen obtained for use by humans?

What is the evidence that learning is taking place?