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Open. The phosphorous enters the system in mineral form (apatite is a type of rock that weathers into available mineral phosphorous) or from animal sources (guano, bone). Water will wash away phosphates which will cause a need for more. The availability of phosphate is a huge limiter in plant growth.
What else can I help you with?
Differentiate open system to closed system in the ecosystem?
A closed system maintains itself on a limited amount of resources that are entrenched in that particular system. Energy can be exchanged with other systems, but not any actual matter. Therefore, some of what goes on in the environment is considered a closed system, but not a whole lot. Open systems are much more common. In an open system, necessary resources are renewed and exchanged on a regular basis. Many ecosystems, for example, rely on the sun to constantly import energy into their basic cycles. Then there's a limited amount of nutrients to go around -- such as carbon, nitrogen and phosphorous -- and they're constantly cycled around. Some common cycles include the hydrological cycle, rock cycle and the carbon cycle. http://curiosity.discovery.com/question/difference-closed-open-system
Do rabbits have an open or closed circulatory system?
Rabbits have a closed circulatory system, meaning that their blood flows through a series of vessels and the heart pumps it continuously around the body. This system allows for efficient transport of oxygen, nutrients, and waste products throughout the rabbit's body.
Do mollusks have a closed circulatory system?
No, mollusks typically have an open circulatory system, where the blood flows around the body cavity and directly bathes the organs. This is in contrast to closed circulatory systems found in some other animals where the blood flows through vessels.
Open system and closed system?
Ludwig Bertalanffy describes two types of systems: open systems and closed systems. The open systems are systems that allow interactions between its internal elements and the environment. An open system is defined as a "system in exchange of matter with its environment, presenting import and export, building-up and breaking-down of its material components."[1] For example, living organism. Closed systems, on the other hand, are considered to be isolated from their environment. For instance, thermodynamics applies to closed systems. The idea of open systems was further developed in systems theory. For instance, open systems in systems theory encourage a non-representational and non-referential posthumanist approach that actualize complexity of reality in a non-deterministic framework.
Why does an earthworm have an open or closed circulatory system?
Earthworms have a closed circulatory system. Blood is pumped throughout its body by ringed blood vessels. An open circulatory system is not contained in vessels. In a closed circulatory system oxygen is carried in blood! hope this helps=)
Is the water cycle open or closed system?
Closed System
Is earth an open or closed system in terms of matter?
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.
Is a washing machine set on a twelve minute wash cycle an open or closed loop system?
typically open
In terms of matter is the biosphere a closed system or an open system?
The biosphere is considered an open system because it interacts with its surroundings through the exchange of energy and matter. It receives input of energy from the sun and cycles materials such as carbon, nitrogen, and water with other Earth systems.
Is a burning candle an example of an open system or a closed system?
The light bulb is a closed system: no mass transfer.
Is the hydrological cycle a closed or open system?
The hydrological cycle is considered a closed system because water is continuously recycled through evaporation, condensation, precipitation, and runoff. Water enters and exits the cycle naturally, but the total amount of water on Earth remains relatively constant.
What is open and closed cycle gas turbine?
In an open cycle gas turbine, the gases that are produced by combustion go directly into the atmosphere, though the heat produced can sometimes be reclaimed. In a closed cycle gas turbine, the gases produced are reused and are not emitted into the atmosphere.
Differentiate open system to closed system in the ecosystem?
A closed system maintains itself on a limited amount of resources that are entrenched in that particular system. Energy can be exchanged with other systems, but not any actual matter. Therefore, some of what goes on in the environment is considered a closed system, but not a whole lot. Open systems are much more common. In an open system, necessary resources are renewed and exchanged on a regular basis. Many ecosystems, for example, rely on the sun to constantly import energy into their basic cycles. Then there's a limited amount of nutrients to go around -- such as carbon, nitrogen and phosphorous -- and they're constantly cycled around. Some common cycles include the hydrological cycle, rock cycle and the carbon cycle. http://curiosity.discovery.com/question/difference-closed-open-system
Do amphibians have an open circulatory system or a closed circulatory system?
Amphibians have closed circulatory system Closed
Would a controlled designed closed or opened loop system enables better control of the system?
Open loop (single cycle) involves a break requiring a restart, easily adapted to closed loop.
Do earthworms have a closed or open circulatory system?
closed circulatory system
Is the phosphorus cycle open or closed?
The phosphorus cycle is considered a closed system because phosphorus does not have a gaseous phase and tends to remain in the solid or dissolved form in ecosystems. This means that phosphorus is continuously recycled within ecosystems through processes like weathering, uptake by plants, and decomposition.
