What does atomic number for an element represent ? number of neutrons in the atomnumber of electrons in the atom number of protons in the atom mass or weight of the atom

Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.

Natural selection changes allele frequencies because some survive and reproduce more successfully than others.

Easy 6th grade work! 100 points! i need fast! compare the parts of a cell and the cell as a whole to another common nonliving system (i.e., a car, a city, describe the parts of a cell and their primary function.