How many helium atoms are in 12 grams of helium?

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

An object becomes electrically charged when: electrons are created in it electrons from it are destroyed electrons are transferred to it protons from it are destroyed protons are created in it