Answer:
Iron particles in basalt on the ocean floor tell scientists that earth's magnetic field changes . In two adjacent magnetic stripes, the iron particles show different alignments.
In trying to prove continental drift, Alfred Wegener used evidence from long ago to show that in the distant past, similar animal species lived in places that are extinct today. For example, fossils of the Glossopteris were found in India, Africa, and Antarctica.
Explanation:
Ocean floors are made of high-density material called basalt. Iron particles in these conclude that magnetic field of the earth changes as iron particles record the orientation of magnetic field. Basalt is also an example of igneous rock.
Alfred Wegener collected variety of pieces of evidence to support continental drift theory. One piece of evidence he sued was fossil evidence. They are fossils of animals that are extinct today.
The fossils of Glossopteris are found in India, Antarctica, South Africa, and even in South America and Australia.
