Venus

Venus is the second-closest planet to the sun and is almost as big as Earth. It is the sixth largest planet in the solar system. It's orbit is around 0.7 AU and it's the closest planet to Earth because the orbit of Mars is much farther than the orbit of Venus. Its atmosphere is really thick.

Life
Venus may have life in the past but the increasing luminosity from the sun heats up Venus killing all life and creating a very thick atmosphere. It doesn't have any plate tectonics.