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.
How many square miles is Brazil? A: Brazil comprises a total area of about 3.3 million square miles, making it the fifth largest country in the world and the largest country in South America, occupying over half the continent. Brazil is bordered by the Atlantic Ocean and has a coastline spanning approximately 4,600 miles. Continue Reading.