Earth Cycles (01:25)
Humans have a massive impact on the environment, and there are many important Earth systems and cycles. The Earth is a recycling planet, and it is beneficially when humans also recycle; almost all matter on Earth has been here since the beginning, is never destroyed, and changes forms as it cycles through the planet.
The Water Cycle (02:42)
Water circulates from the oceans to clouds, to lakes and streams, and finally back into the oceans changing forms through the process; glaciers and underground aquifers are the world's largest freshwater reservoirs in the water cycle. Biogeochemical cycles are when a chemical element or compound moves through all parts of the Earth.
The Nitrogen Cycle (04:08)
The Earth's atmosphere is home to the biggest nitrogen reservoir on the planet; in the form of gas, nitrogen is taken in by plants and goes through the nitrogen fixation process. During the nitrogen cycle, the chemical will combine with other elements, but follows the same basic pattern as the water cycle.
The Carbon Cycle (09:40)
Carbon is a form of matter and is a basic ingredient for all living things on the planet; its forms include coal, charcoal, and graphite. Life could not exist on Earth without the carbon cycle and its reservoirs, known as biomass, in the oceans, atmosphere, plants, soil, and rocks.
Systems Thinking and Human Impact (03:42)
Systems thinking is when researchers analyze how all of Earth's systems work together and create a broader picture of how the planet functions. Ecosystems include all of the living and non-living organisms in an area; all Earth processes affect the other operations of the planet.
Human Impact on Earth Systems (01:31)
Humans have a significant impact on the carbon, nitrogen, and water cycles as well as the Earth's natural resources and many other Earth systems. Human activity often interferes with the natural cycles of the Earth.
Natural Resources (04:53)
Earth's natural resources are any materials which are provided naturally by the planet and then used by humans like water, minerals, fossil fuels, and much more. These resources are either renewable, meaning they can be replaced at the same rate they are being used, or non-renewable, which means they form much slower than the rate in which they are used.
Credits: Earth Systems (00:14)
Credits: Earth Systems
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