41+ Background Extinction

41+ Background Extinction. Usually, fate of a species depends on the ability of surviving and reproducing under different environmental condition where they inhabit. Background extinction refers to the normal extinction rate.

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** between 1.4 and 1.8 million species have already been scientifically identified. Assume that all these extinctions… Lockwood noted that the examination of background extinction reveals that some of the life forms in today's oceans are quite similar to the seas of the remote past.

Background extinction tends to be slow and gradual but common with a small percentage of species at any given time fading into extinction across earth's history.

*experts actually call this natural extinction rate the background extinction rate. The background extinction rate is often measured for a specific classification and over a particular period of time. • although species extinction is an important element of evolution the current species extinction rate exceeds this natural rate by 100 to 1,000 times. Took place in the last 1 million years.