What is the most widely used method for the ratification of an amendment to the Constitution? ratification by three-fourths of the popular vote

ratification by three-fourths of the state legislatures

ratification by state conventions

ratification by two-thirds of the Senate

What important discovery was made by edmond halley and alexis clairaut, using newton's ideas of mathematics and gravity? they created the scientific method to outline how science should be conducted. they were able to find the orbit of a comet and predict the year of its return. they discovered the three newest planets--uranus, neptune, and pluto. they explained why objects appear to have color.