What causes sea water to become less salty?

a. melting sea ice
b. river inflow
c. rain
d. all of the above
e. none of the above

What must be done to breed dogs for a partical trait

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which statement best describes the role of religion and culture in ancient medicine?