This showed that greenfinch and starling numbers were continuing to decline, but reaffirmed the success of the house sparrow, which topped the Welsh and UK surveys.
Alfred Wegener (1880 - 1930). Alfred Wegener proposed the theory of continental drift at the beginning of the 20th century. His idea was that the Earth's continents were once joined together, but gradually moved apart over millions of years.his slideshow explains Wegener's theory. Earth around 200 million years ago, at the time of Pangaea. Wegenerâs evidence for continental drift was that: 1  the same types of fossilised animals and plants are found in South America and Africa.
The Theory of Continental Drift A German scientist named Alfred Wegener formed the hypothesis that the continents had moved! He proposed that all the continents had once been joined together in a single landmass and have since drifted apart.Wegener named this supercontinent Pangea.he Theory of Continental Drift Wegenerâs idea that the continents slowly moved over the earth became known as continental drift. Unfortunately Wegener could not provide a satisfactory explanation for the force that pushed or pull the continents.