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The two statements that disprove the theory of spontaneous generation are that A) All living things are made of cells and that D) Living cells can only come from previously existing cells.
The scientist that disproved the spontaneous generation theory was Louis Pasteur, who boiled a culture broth free of microorganisms and let it stand for a long period of time. No organisms grew from the flask, but when Pasteur opened it to the environment the flask soon became full of bacteria. That proved that there were microorganisms that were responsible for the growing of living things and disproved the theory of Spontaneous generation.
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<span>c. numbers of neutrons.</span><span>
Isotopes are atoms of the same element with the same number of protons and same number of electrons but with <span>different number of neutrons. They differ in the number of neutrons that is why they also differ in mass numbers. Since they have the same number of protons, they have the same atomic number.
For instance, when the nucleus of the isotope with a 68.926 amu, there are 30 protons and 39 neutrons in the nucleus. The best example for this is Zn (zinc-69 isotope) and Ga (gallium-69 isotope) which has 68.926 amu and 68.925 amu respectively. </span></span>
A genus is composed of a number of related species. For example, canus is the genus for dogs.
