The four terrestrial planets that have solid, rocky surfaces are. a. mercury, venus, earth and mars b. mercury, jupiter, saturn and mars. c. mars, venus, earth and jupiter d. mercury, venus, jupiter and mars

With i really need the correct answer!

Which branches of natural science include the study of an organism that lived 10 million years ago

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90