Examlex
This structure carries oxygenated blood from the placenta to the fetus.
Organism
A living entity made up of one or more cells that is capable of growth, reproduction, and response to stimuli like bacteria, plants, and animals.
Stable Ecosystem
An ecosystem that remains relatively constant in its composition of species and the transfer of energy over time, demonstrating resilience to disturbances.
Balanced Ecosystem
An ecological state where natural systems are in harmony, with stable populations and sustainable interactions among organisms and their environment.
Matter Cycle
The movement and exchange of organic and inorganic matter back into the production of living matter, involving processes like the carbon and nitrogen cycles.
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