These fluctuations may also affect the predators that feed on these prey items, such as wolves, foxes and owls. These predators must either find an alternate source of prey or risk starvation and death. Ecological Succession. When changes to either abiotic or biotic factors affect an entire ecosystem, ecological succession occurs.
A temporary decrease in blood flow to the brain results in unconsciousness, or fainting. Many disorders, some of them serious, can cause this.
Syncope: Introduction. Syncope: Syncope means loss of consciousness such as fainting. The term dizziness is often used for milder feelings of lightheadedness that often precede a fainting ... more about Syncope. Syncope: Syncope is the temporary loss of consciousness due to a sudden decline in blood flow to the brain.