What is the amplitude of photo as they passed a black hole

Which best describes how fluids change as they travel through different portions of the convection currents? they change to solids at the outer portion of the convection currents. they change to solids at the inner portion of the convection currents. they become more dense at the outer portion of the convection currents. they become more dense at the inner portion of the convection currents

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

By what primary heat transfer mechanism does the sun warm the earth?