footouddewelsWhen top-down control occurs within an intertidal zone along the rockycoastline of the Pacific Ocean, which of the following species controls theabundance of other species, because of its keystone species influence?Mark only one oval.Food webs are typically arranged into trophic levels with which of the following?Mark only one oval.OA) primary producers at the bottom, carnivores in the middle, and herbivores at the0 0 0 0top.top.top,A) kelpB) musselsC) barnaclesD) starfishE) Spartina grassestop.B) herbivores at the bottom, carnivores in the middle, and primary producers at theC) carnivores at the bottom, herbivores in the middle, and primary producers at theD) primary producers at the bottom, herbivores in the middle, and carnivores at theRemoval of sea otters from a Pacific Ocean system results in a massiveincrease in sea urchins and subsequent loss of kelp beds. This is an example ofwhich of the following?Mark only one oval.A) a trophic cascade.B) apparent competition.C) bottom-up control.OD) indirect mutualism.X

When top-down control occurs within an intertidal zone along the rocky coastline of the Pacific Ocean, which of the following species controls the abundance of other species, because of its keystone species influence? Mark only one oval. A) kelp B) mussels C) barnacles D) starfish E) Spartina grasses

When top-down control occurs within an intertidal zone along the rocky coastline of the Pacific Ocean, which of the following species controls the abundance of other species, because of its keystone species influence? Mark only one oval. A) kelp B) mussels C) barnacles D) starfish E) Spartina grasses

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter54: Ecosystems And Global Change

Section: Chapter Questions

Problem 1ITD

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