Depression increases your risk of a number of diseases and other conditions by, for example, increasing levels of stress hormones such as cortisol or adrenaline. Depression can affect the immune system, making it harder for your body to fight infection. Vaccinations are even less effective in people with depression.
The total surface area of the Earth is about 7008510000000000000â 510 million km2 (197 million sq mi). Of this, 70.8%, or 7008361130000000000â 361.13 million km2 (139.43 million sq mi), is below sea level and covered by ocean water.
As difficult as it may be to believe, the Pacific Ocean is larger than the landmass of every single continent and island combined. In numbers: The Pacific Ocean covers: 165.25 million square kilometers. The Earthâs Land Mass covers: 148.94 million square kilometers. And in case you were wondering, Chris has used the Fuller (or Dymaxion) projection to preserve the relative size and shape of continents.