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What is an environment's carrying capacity?
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
What is the role of bacteria in the nitrogen cycle?
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
Burning of fossil fuels has led to...
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
How much energy is lost between levels of a food pyramid?
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
Why are there usually only 4 or 5 links in a food chain?
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
Examples of biotic factors include...
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
Which one of the following ecological roles is the most numerous in an ecosystem?
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
Biotic factors are defined as:
living things in an environment
Converting atmosphereic nitrogen to a more usable form for plants
an increase in global carbon levels
Producers
There is not enough energy available to support numerous top-level predators
90%
Highest number of organisms that can an ecosystem can support for an extended period
bacteria & fungi
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