D.8
Outermost shell means valence electrons and the 36th element (krypton) has 8 valence electrons
Answer:
but no the answer is spine which can also be called vertebral column so is B
Pluto is not considered a planet due to all the reasons you stated above
Answer:A star with a planet will move in its own small orbit in response to the planet's gravity. This leads to variations in the speed with which the star moves toward or away from Earth, i.e. the variations are in the radial velocity of the star with respect to Earth. The radial velocity can be deduced from the displacement in the parent star's spectral lines due to the Doppler effect
Explanation: