Which scientist formed his ideas about living things by performing observations without using a microscope? a) hooke b) malpighi c) van leeuwenhoek d) vesalius

According to the law of conservation of mass, in a chemical reaction the total starting mass of all the reactants equal the total final mass of all the products. true or false?

Which of the following are not typically included in the periodic table? a. atomic mass b. element symbol c. isotopes d. number of electrons

The heliocentric and the geocentric models of the solar system included these central principles