A lymphocyte is a type of white blood cell. White blood cells are part of your immune system and help your body fight off diseases, including infections and cancer. There are two main types of lymphocytes â B cells and T cells.
There are the inner, rocky planets and then the outer gas planets. Venus is a rocky planet, as are Mercury, Earth and Mars. The terrestrial (rocky) planets are the 4 inner (closest to the sun behind the asteroid belt) rocky worlds in the Solar System: Mercury, Venus, Earth and Mars. The Gas giants, well, they are Jupiter, Saturn, Uranus, and Neptune. The gas and rocky planets are separated by the asteroid belt.
photo credit Nasa / Goddard Space Flight Center / Reto StÃ¶ckli. Terrestrial Planets vs. Jovian Planets (Gas Giants) What are the Terrestrial Planets & what are the 3 things they have in common? The Terrestrial Planets are Mercury, Venus, Earth & Mars. 3 similarities between the four planets include: They are all composed of rock & metals. They are all smaller than gas giants They all have few or no moons at all.