An example of the biosphere is where live occurs on, above and below the surface of Earth. The zone of planet earth where life naturally occurs, extending from the deep crust to the lower atmosphere. The living organisms and their environment composing the biosphere.

The term “Earth system” refers to Earth´s interacting physical, chemical, and biological processes. The system consists of the land, oceans, atmosphere and poles. It includes the planet’s natural cycles — the carbon, water, nitrogen, phosphorus, sulphur and other cycles — and deep Earth processes.

The Milankovitch cycles include: The shape of Earth’s orbit, known as eccentricity; The angle Earth’s axis is tilted with respect to Earth’s orbital plane, known as obliquity; and. The direction Earth’s axis of rotation is pointed, known as precession.

Why is it important for scientists to study multiple systems on Earth at the same time instead of studying them separately? They can observe how parts of the different systems affect each other.

The earth is a vast, complex system powered by two sources of energy: an internal source (the decay of radioactive elements in the geosphere, which generates geothermal heat) and an external source (the solar radiation received from the Sun); the vast majority of the energy in the earth system comes from the Sun.

The “Earth system” approach looks at the planet as a whole, linking the atmosphere, the ocean and hydrosphere, the terrestrial realm, the cryosphere and even the biosphere.

To understand the generation and maintenance of disequilibrium—and the associated low entropy within the system—we note that the Earth system is not an isolated system, so that the nature of its thermodynamic state is substantially different.

It is important to note that the earth is not an isolated system: it receives energy from the sun, and radiates energy back into space. For the earth, though, we have to take into account the change of entropy involved with both the absorption of energy from the sun and the radiation of energy into space.

Earth in turn emits radiation back out to space across the system boundary. Hence, energy passes across Earth’s system boundary, but not mass, making it a closed system. The interface between systems is not always easy to identify, others more so.

Closed: energy enters and leaves but material does not. Open: both energy and matter enter and leave. The Earth is a closed system: energy from sunlight enters. and “no” matter enters or leaves (except for the rare meteorite)

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Heart is likely to the size of one closed first .

The digestive system consists of a group of organs that form a closed tube-like structure called the gastrointestinal tract (GI tract) or the alimentary canal.

Earthworms have a complete digestive system, one which has two openings, the mouth and the anus.

The food is digested in the small intestine. It is dissolved by the juices from the pancreas, liver, and intestine. The contents of the intestine are mixed and pushed forward to allow further digestion. Last, the digested nutrients are absorbed through the intestinal walls.

The respiratory system brings oxygen into the lungs when you breathe. The digestive system breaks food down into nutrients such as glucose. Now the circulatory system enters the picture. It transports glucose and other nutrients from the digestive system to the cells.

The respiratory and digestive systems work together to power the body. A properly functioning respiratory system delivers adequate oxygen to the blood. Because the digestive system breaks down food and uses muscular contractions to move food through the digestive tract, it needs oxygen to function properly.

(1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).

The respiratory system works directly with the circulatory system to provide oxygen to the body. Oxygen taken in from the respiratory system moves into blood vessels that then circulate oxygen-rich blood to tissues and cells.

The stomach has 3 main functions: temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer. mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach. digestion of food.

The liver regulates most chemical levels in the blood and excretes a product called bile. This helps carry away waste products from the liver. All the blood leaving the stomach and intestines passes through the liver.