1 One of the adverse effects of smoking analogue cigarettes is the damage to the cilia. 2  Cilia are the small hair-like organelles which assist in reducing your risk of infections by pushing mucus out of your lungs. 3  The regenerative process your lungs undergo include the repair of the cilia.
Mars is approximately half the diameter of Earth, and its surface area is only slightly less than the total area of Earth's dry land. Mars is less dense than Earth, having about 15% of Earth's volume and 11% of Earth's mass, resulting in about 38% of Earth's surface gravity.
Mars Planet Profile. Mars size compared to Earth. Mars distance from the Sun and orbital eccentricity. Mars and Earth have approximately the same landmass. Even though Mars has only 15% of the Earthâs volume and just over 10% of the Earthâs mass, around two thirds of the Earthâs surface is covered in water.