cycleonearth

2020年2月27日 — Our lives literally revolve around cycles: series of events that are repeated regularly in the same order. There are hundreds of different ...

The carbon cycle comprises a sequence of events that are key to making Earth capable of sustaining life. It describes the movement of carbon as it is recycled ...

There are many ways in which the energy, water, and biogeochemical cycles (cycles of the elements that involve life, chemicals, and the solid Earth) interact ...

When we cut down forests, make more factories, and drive more cars that burn fossil fuels, the way that carbon and nitrogen move around the Earth changes. These ...

Geological and biological processes cause energy and the elements necessary for life-carbon, hydrogen, nitrogen, oxygen, sulfur, and phosphorus- to circulate ...

The hydrosphere—the set of places where water can be found as it cycles on Earth—is large and diverse. Water is present as a liquid on the Earth's surface ...

2019年2月1日 — In its three phases (solid, liquid, and gas), water ties together the major parts of the Earth's climate system — air, clouds, the ocean, lakes, ...

The water cycle, also known as the hydrologic cycle, describes where water is stored on Earth and how it moves. Water is stored in the atmosphere, ...