Carbon dioxide is important because it is used in photosynthesis, a process that is necessary for the survival of life on Earth. Carbon dioxide is also a vital greenhouse gas that helps trap heat in the atmosphere, and it plays a key role in Earth's carbon cycle.Know More
Plants and some microbes use a biochemical process called photosynthesis to make food by using up carbon dioxide. These organisms combine carbon dioxide and water to produce carbohydrates while giving off oxygen. The rise of photosynthetic organisms that consequently reduced carbon dioxide levels led to increased oxygen levels and the development of oxygen-breathing organisms.
Carbon dioxide contributes to the greenhouse effect by interfering with the return of energy from Earth's surface to space by infrared radiation. Greenhouse gases absorb infrared radiation. Without carbon dioxide in the atmosphere, Earth's climate would be much cooler.
Carbon dioxide acts as a climate buffer, because feedback in the carbon cycle helps to maintain global temperatures so Earth's climate does not get too hot or cold to support life. Outgassing from the Earth's interior at active volcanoes, volcanic arcs and mid-ocean ridges is the primary source of carbon dioxide. Some outgassed carbon dioxide remains in the atmosphere, but some is dissolved in the oceans or stored as biomass in living or decaying organisms.Learn more about Chemistry
Photosynthesis is the process that removes carbon dioxide from the Earth's atmosphere. Carbon dioxide is also removed from the atmosphere when it mixes with water and forms carbonic acid, which is the acid that's partially responsible for the weatherization of rocks along and in the sea.Full Answer >
Carbon is found on Earth in water, rocks and elements such as magnesium and iron. Hydrocarbons are what people often use as sources of energy, such as coal, petrol and natural gas.Full Answer >
The carbon oxygen cycle is the process by which plants use carbon dioxide for respiration during photosynthesis and produce oxygen. During this process, carbon dioxide becomes part of the plant, and when the plant dies in a carbon-rich state it is possible for it to become a fossil fuel.Full Answer >
Chemical differentiation describes the process by which heavier, molten elements like iron and nickel sank to the center of the Earth and lighter elements like silicon, oxygen and aluminum populated the surface of the planet 4.5 billion years ago, according to Indiana University-Purdue University Fort Wayne. Scientists theorize that gravity caused the chemical elements to separate into different parts of the Earth.Full Answer >