You don't have to be a tennis player to be affected by tennis elbow, an overuse injury causing pain around the outside of the elbow. Tennis elbow, also known as lateral epicondylitis, is believed to affect around one in three people at any time, most often between the ages of 40 and 60.
Itâs theelement that anchors all organic substances, fromfossil fuels to DNA. On Earth, carbon cycles throughthe land, ocean, atmosphere, and the Earthâs interiorin a major biogeochemical cycle (the circulation ofchemical components through the biosphere from orto the lithosphere, atmosphere, and hydrosphere).
Carbon dioxide is an integral part of the carbon cycle, a biogeochemical cycle in which carbon is exchanged between the Earth's oceans, soil, rocks and biosphere.he global annual mean concentration of CO 2 in the atmosphere has increased markedly since the Industrial Revolution, from 280 ppm to 400 ppm as of 2015. The present concentration is the highest in the past 800,000 years and likely the highest in the past 20 million years.