As shown in the following graph,selected intertidal communities along the Washington coast changed when the sea star Pisaster ochraceus was removed.After 10 years,how did those communities compare to control communities?
A) The communities were statistically indistinguishable from one another.
B) Without sea stars, the total number of species declined.
C) Other predatory sea stars replaced Pisaster.
D) Some populations declined, but species diversity was unaffected.

Question

As shown in the following graph,selected intertidal communities along the Washington coast changed when the sea star Pisaster ochraceus was removed.After 10 years,how did those communities compare to control communities? 
A) The communities were statistically indistinguishable from one another. 
B) Without sea stars, the total number of species declined. 
C) Other predatory sea stars replaced Pisaster. 
D) Some populations declined, but species diversity was unaffected.

Quizplus · Accepted Answer

The removal of Pisaster ochraceus caused a decline in the total number of species in the intertidal communities along the Washington coast.

As Shown in the Following Graph,selected Intertidal Communities Along the Washington