Matthias Schleiden studied plant tissues and made the first statement of cell theory. He stated that all plants are aggregates of individual cells which are fully independent. Theodor Schwann reported that all animal tissues are also composed of individual cells. Rudolf Virchow proposed an important extension of cell theory that all living cells arise from the pre existing cells.
Theodore Schwann
Matthias Schleiden
Rudolf Virchow
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Scientists had made observations that did not fit exactly with Dalton's theory. Scientists changed the atomic theory to include this new knowledge. While the modern atomic theory is based on Dalton's theory, it is also very different.
Wegner's theory was not accept because he didn't have much evidence to support his theory with and scientists thought that there might have been a land bridge between the continents. Another reason to why his theory was rejected was that he was a foreigner, by that; the scientists didn't really take him seriously.
Each scientists have there own opinion. Some accept theories and some have to have facts.
Scientists treat all theories the same way, popular or not. They will reject any theory if evidence appears which contradicts it.
Malthus
darwin
Robert Hooke, Anton van Leeuwenhoek, Mattias Shleiden, Theodor Schwann, and Rudolph Virchow
For their own benefits.
Malthus
James Clerk Maxwell and Ludwig Boltzmann
Charles Darwin
No one person invented or developed the theory of paleomagnetism. Several different scientists contributed to the development of the theory of paleomagnetism.
Lyell
Credit for the formulation of this theory is given to German scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virchow.
modify the theory or discard it altogether.
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