Solar energy :)
External sources of energy entering the Earth system include solar radiation and cosmic rays. Solar radiation, the primary external energy source, drives various processes and is essential for sustaining life on Earth. Cosmic rays, though less significant than solar radiation, also contribute to the energy balance of the planet.
In Microsoft Excel, the data stays in the cell where it was entered. If that cell is referenced by an external source, it will also be copied to that external source. The location cannot be determined from Excel, only from the external source.
Energy from internal sources enters the Earth system through convection as heat is transferred from the mantle to the surface through the movement of molten rock. External energy from the Sun enters the Earth system through radiation, with sunlight being absorbed by the Earth's surface and converting into heat energy. Both processes play a crucial role in driving the Earth's climate and geological processes.
Examples of inputs to Earth's system include solar radiation from the Sun, which provides energy for various Earth processes such as weather and climate dynamics; and external debris like meteoroids and interstellar dust, which occasionally enter the Earth's atmosphere and contribute to the planet's mass.
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The Earth is called a closed ecosystem because it functions as a self-contained system where energy and materials are exchanged within itself without any external inputs or outputs. This means that resources are recycled within the Earth's system, making it relatively self-sustaining.
The Earth is considered a closed system in terms of matter, meaning that matter does not enter or leave the Earth on a significant scale. While small amounts of matter may enter or exit the Earth's atmosphere, the overall mass of the planet remains relatively constant.
External nares are openings in the nostrils that allow air to enter the respiratory system during breathing. They also help filter and humidify the air before it reaches the lungs. Additionally, external nares play a role in the olfaction process by allowing smell molecules to enter the nasal cavity for detection.
When almost all of the hydrogen atoms within its core have fused into helium atoms. Source: holt earth science
When almost all of the hydrogen atoms within its core have fused into helium atoms. Source: holt earth science
Debris from the solar system that strikes the Earth is known as meteoroids. When meteoroids enter the Earth's atmosphere and burn up, they are called meteors or shooting stars. If a meteor survives its journey through the atmosphere and lands on Earth, it is called a meteorite.
Earth is a closed system in terms of matter, meaning that no new matter is added from outside the system. Matter can cycle within the Earth's systems (such as the water cycle or carbon cycle), but it does not enter or leave the planet.