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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

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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foot oud de wels 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. 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 the 0 0 0 0 top. top. top, A) kelp B) mussels C) barnacles D) starfish E) Spartina grasses top. B) herbivores at the bottom, carnivores in the middle, and primary producers at the C) carnivores at the bottom, herbivores in the middle, and primary producers at the D) primary producers at the bottom, herbivores in the middle, and carnivores at the Removal of sea otters from a Pacific Ocean system results in a massive increase in sea urchins and subsequent loss of kelp beds. This is an example of which of the following? Mark only one oval. A) a trophic cascade. B) apparent competition. C) bottom-up control. OD) indirect mutualism. X
Transcribed Image Text:foot oud de wels 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. 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 the 0 0 0 0 top. top. top, A) kelp B) mussels C) barnacles D) starfish E) Spartina grasses top. B) herbivores at the bottom, carnivores in the middle, and primary producers at the C) carnivores at the bottom, herbivores in the middle, and primary producers at the D) primary producers at the bottom, herbivores in the middle, and carnivores at the Removal of sea otters from a Pacific Ocean system results in a massive increase in sea urchins and subsequent loss of kelp beds. This is an example of which of the following? Mark only one oval. A) a trophic cascade. B) apparent competition. C) bottom-up control. OD) indirect mutualism. X
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