Solve the differential equation by series solution dy/dx=2xy

What does si stand for, when referring to a system of measurement

Which component of the earth’s atmosphere is decreased due to photosynthesis?

What do the atoms of elements in the same group have in common? a. they have the same atomic numbers. b. they have the same average atomic masses. c. they have the same number of electron shells. d. they have the same number of electrons in their outermost shells.