Earth's Atmospheric Layers. Diagram of the layers within Earth's atmosphere. Troposphere. The troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.Stratosphere. The stratosphere starts just above the troposphere and extends to 50 kilometers (31 miles) high.he troposphere starts at the Earth's surface and extends 8 to 14.5 kilometers high (5 to 9 miles). This part of the atmosphere is the most dense. Almost all weather is in this region.
A bruise, or contusion, is a type of hematoma of tissue in which capillaries and sometimes venules are damaged by trauma, allowing blood to seep, hemorrhage, or extravasate into the surrounding interstitial tissues.
A cork or as it is more formerly known a muscle contusion is a common occurrence in many sports, especially contact sports such as football, rugby and basketball.Contusions occur when a direct blow or repeated blows from a blunt object strike part of the body, or from a fall onto a hard surface. cork or as it is more formerly known a muscle contusion is a common occurrence in many sports, especially contact sports such as football, rugby and basketball.