Water vapor in the atmosphere .
A. traps heat in the atmosphere
B. causes evaporation
C. reflects heat and helps keep the Earth cool
D. is a primary gas

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

12. calculate the hydroxide ion concentration of a solution with ph = 3.25. show all calculations leading to an answer

Will mark brainliest how many electrons can be held in the energy level n = 4?