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The diagram above represents relationships in an
ecosystem. What is the primary source of energy in
this environment?
cellular respiration in the plants
energy from minerals in the soil
fossil fuels
solar energy
What is one of the best ways to represent the
interdependence of all of the organisms in an
ecosystem?
a cell model
a food chain
a diagram of the water cycle
a food web
Stability within an ecosystem is achieved partially by
the presence of organisms that break down important
molecules and return those nutrients to the soil. These organisms are
plants
herbivores
detritivores
decomposers
The diagram below represents an energy pyramid.
Which type of organism could occupy levels B, C,
and D of this energy pyramid?
consumer
producer
autotroph
carnivore
Producers are generally found at the beginning of a
food chain. Which statement best explains why this
is true?
Producers are usually smaller in size than
consumers.
Producers do not rely on other organisms for
food.
There are always more consumers than
producers in food chains.
Consumers are always more complex
organisms than producers.
Some organisms in an ecosystem are represented in
the pyramid below. In the pyramid, the arrows
labeled X represent
the loss of organisms due to predation
a decrease in photosynthetic organisms
the loss of energy in the form of heat
a decrease in available oxygen
A single individual belonging to a specific species
Biotic
Community
Organism
Reptile
Which of the following types of ecological pyramids follow the rule of 10%? (check all that apply)
Energy Pyramid
Numbers Pyramid
Biomagnification Pyramid
Biomass Pyramid
Any living factor in an environment is called a(n) _______________ factor.
Any non-living factor in an environment is called a(n) _______________ factor.
The diagram represents an biomass pyramid.
If 500 kg of organisms were present in trophic level "A", what would be the biomass of trophic level "B"?
500 kg
5,000 kg
50 kg
5 kg
The diagram represents a biomass pyramid.
If 100 J of energy were transferred from trophic level "B" to "C", how much energy was present in trophic level "A"?
10,000 J
1,000 J
100 J
100,000 J
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