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Hace 5 días · Renewable energy, usable energy derived from replenishable sources such as the Sun (solar energy), wind (wind power), rivers (hydroelectric power), hot springs (geothermal energy), tides (tidal power), and biomass (biofuels).
- Sulfur Dioxide
Sulfur dioxide can be liquefied under moderate pressures at...
- Heart Disease
Heart disease, any disorder of the heart. Examples include...
- Alternative Energy
In the late 1900s people began to look for different, or...
- Sulfur Dioxide
Hace 5 días · Potential energy, stored energy that depends upon the relative position of various parts of a system. For example, a steel ball has more potential energy raised above the ground than it has after falling to Earth. Learn more about potential energy in this article.
- The Editors of Encyclopaedia Britannica
Hace 3 días · Chemical reactions happen at a characteristic reaction rate at a given temperature and chemical concentration. Some reactions produce heat and are called exothermic reactions, while others may require heat to enable the reaction to occur, which are called endothermic reactions.
Hace 2 días · Photosynthesis changes sunlight into chemical energy, splits water to liberate O 2, and fixes CO 2 into sugar. Most photosynthetic organisms are photoautotrophs, which means that they are able to synthesize food directly from carbon dioxide and water using energy from light.
Hace 3 días · You’ve probably heard the phrase “everything is energy” attributed to Albert Einstein. It seems simple enough on the surface, but what did Einstein really mean when he said it? Was he speaking literally, or in more of a philosophical or metaphorical sense? The Meaning Behind “Everything Is Energy”
Hace 5 días · Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Hace 5 días · nuclear fission, subdivision of a heavy atomic nucleus, such as that of uranium or plutonium, into two fragments of roughly equal mass. The process is accompanied by the release of a large amount of energy.
