HDL (good) cholesterol protects against heart disease, so for HDL, higher numbers are better. A level less than 40 mg/dL is low and is considered a major risk factor because it increases your risk for developing heart disease. HDL levels of 60 mg/dL or more help to lower your risk for heart disease.
The Mariana Trench or Marianas Trench is the deepest part of the world's oceans. It is located in the western Pacific Ocean, an average of 200 kilometres to the east of the Mariana Islands, in the Western Pacific East of Philippines. It is a crescent-shaped scar in the Earth's crust, and measures about 2,550 km long and 69 km wide on average. It reaches a maximum-known depth of 10,994 metres at a small slot-shaped valley in its floor known as the Challenger Deep, at its southern end, although so
Most of the ocean floor is a huge, dark, nearly flat area called the Abyssal Plain. The sea floor is a huge flat area. It lies at depths of about 4000 to 6000 meters below the surface of the ocean. It is called the Abyssal Plain. Sea floor spreading occurs here, which means that there is volcanic action and a mid-ocean ridge where some of the lava has cooled.