Why do most food chains not go beyond the 4th or 5th trophic level?

The term food web refers to the:    Question 10 options:   Rate at which the primary producers can incorporate energy from the sun.   Total weight of the living or previously living organisms in an area at one time.   An organism that can make its own food using energy from inorganic molecules instead of the sun.   A non-linear representation of all the trophic levels in an ecosystem.

At which trophic level would you expect to find the highest concentration of a biomagnifying toxin? O primary producer herbivore mesopredator top carnivore primary consumer

Name the trophic level occupied by secondary consumers & tertiary consumers?

Organisms in an ecosystem can be classified as producers or consumers. The producers provide food for the consumers. An organism that breaks down already dead organisms is called?

Give

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…

In a food web, two different species can directly affect each other’s abundance via _ competition or may in fact have their abundance indirectly regulated by a higher trophic level, a phenomenon called ____ competition. a) Intraspecific, apparent b) Interspecific, apparent c) Intraspecific, apparent d) Apparent, interspecific

The process that results in differing concentrations of heavy metal such as mercury at different trophic levels within a food web is called   Group of answer choices a) biocontamination   b) biodiversification   c) bioconservation   d)biomagnification

What is ‘trophic cascade’ and The role of the predator in the ecosystem?