The average dose of smokeless tobacco contains

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

Which fact represents evidence for the big bang theory?

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.