Answer.
1) Both
2) Venus
3) Both
4) Earth
5) Earth
6) Venus
Explanation:
We know that Venus and Earth are the terrestrial planets. They both have a rocky surface. Venus has a very thick atmospheric layer which traps the sun light and therefore, it is the hottest planet of the solar system.
Since it is the brightest planet of the solar system, Venus is known as morning and evening star
Greenhouse effect warms both the planets.
We also know that Earth is the only planet on which life exists. It is the planet that is located at the ideal distance from the Sun which helps to maintain all the sustainable conditions that is temperature that can support life on it.
Earth is the densest planet of the solar system. The retrograde rotation of Venus is due to the tilt of its axis. Due to this tilt only, it appears that the rotation of Venus is in opposite direction than other planets.