_____________ occurs when a large number of species goes extinct over a relatively short period of time.a.Extinctionb.Extirpationc.Mass Effectd.Mass Extinction

Which choices are included in the definition of "mass extinction"? A. The event must be global B. All ecologies must be involved C. The duration of the event must be short D. The number of species extinction must exceed 30% existing at the time

Describe a recent extinction event.

The term that best describes a large-scale dying out of a large percentage of all living organisms within an area over a short term is: Question 20 options: species at-risk modelling mass extinction biodiversity crisis

The current extinction rate is similar toMultiple choice question.the background extinction rate.the five mass extinctions that have occurred in the past.that predicted by the five forces of evolution.the normal disappearance rate of species before human intervention.

The success or failure of a particular species through time impossible to predict because LO.15 A- the geologic record contains an incomplete history of species B- the appearance and disappearance of food sources C- mass extinction involves millions of species D- the factors that drive species to extinction are highly complex