What is the difference between a theory that states that “all cells come from preexisting cells,” and the ‘theory’ that “little green men live in outer space? ”

Which law represents a balanced chemical equation?

All organisms contribute some water to the water cycle by conducting

Which one is an advantage of external fertilization a. the offspring are genetically identical to the parents b. more eggs can be fertilzed at one time c. more sperm can be released at one time d. more protection is available for developing plz