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Biology 18 Online
OpenStudy (vera_ewing):

Bio question

OpenStudy (vera_ewing):

OpenStudy (vera_ewing):

OpenStudy (vera_ewing):

I'm pretty sure it's either A or B.

OpenStudy (cuanchi):

choose one and try your answer!, why are not C or D?

OpenStudy (vera_ewing):

Well C and D say an increase in population, and the graph obviously shows that at point Z, the population decreased. So it can't be C or D.

OpenStudy (koikkara):

Possibility of B... due to sudden change in atmosphere effects the growth of the species and sudden drop occurs.

OpenStudy (vera_ewing):

@abb0t Do you agree that it is B?

OpenStudy (abb0t):

I would not agree.

OpenStudy (cuanchi):

What is the difference between A and B?

OpenStudy (vera_ewing):

I think it's A. Since C and D both say an increase, which it obviously can't be, right?

OpenStudy (abb0t):

You see a decrease, but then you gradually see an increase. Mass extinction would not explain why there was an increase in the species.

OpenStudy (abb0t):

Dinosaurs, would be an example of a mass extinction.

OpenStudy (vera_ewing):

Ohh ok so then it has to be A right?

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