Which must be present in order to call study scientific

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

What is the power rating of the lightbulb if 3.0 a flow through it when connected to a 15 v battery

Notice how they put future which of the clouds shown would indicate a possible future rain storm? a) b) c) d)