What is not a main principle of the cell theory? a-cells are the basic unit of structure and function in living things

b-new cells are produced from existing cells

c-all cells enclose their DNA within a nucleus

d-all living things are made of cells

Which contributions did galileo make to the model of the solar system? check all that apply. a mathematical model for the orbits of the planets scientifically accurate data on planetary orbits data that showed that planets reflected sunlight similar to earth's moon up the idea that stars are other suns that do not move u observations of the moons of jupiter rotating around the gas giant