Ecological Organization
Food Webs and Chains
Food Pyramids and Energy Transfer
Class Activities
Vocab and Synonyms
100
An individual living thing
An organsim
100
all energy in a food web starts here
the sun
100
What trophic level has the most available energy?
producers
100
What chemical threatened bird species as a result of bioaccumulation?
DDT
100
decomposers and consumers are both examples of this type of organism
heterotrophs
200
a large ecosystem
A biome
200
What do the arrows show in a food web?
the direction that energy flows
200
How much (%) energy is lost between trophic levels?
90%
200
In Monday's lab, which organism/trophic level had the most available energy
Sunflower Producer
200
the specific role an organism plays in an ecosystem
niche
300
all of the different species in an area
community
300
Organisms that make their own food by converting sunlight
Producers, autotrophs, or plants
300
What two things decrease from lower to higher trophic levels?
biomass available energy
300
From Monday's lab, name one organism that acted as both a predator and as prey.
Rattlesnake
300
Another term for producer
Autotroph
400
Commmunity + ___________ = ecosystem
Habitat (abiotic factors)
400
an organism that eats other organisms to get energy
consumer
400
the process of how the concentration of toxins (mercury) increases in higher trophic levels
bioaccumulation
400
What trophic level is most likely to the highest concentration of toxins such as mercury?
keystone species tertiary consumer
400
The top level in a food web or chain that controls several populations.
keystone species
500
the smallest classification that includes abiotic factors
an ecosystem
500
organisms that get energy by breaking down dead organisms
decomposers
500
If a shark is at the 4th level of food pyramid and weighs 15 kg, how many kgs in the first level are needed to support the shark
15,000
500
Name three other terms that all keystone species also must be. (may not use organism or animal)
carnivore heterotroph consumer (tertiary or secondary) predator
500
all nonliving parts of an ecosystem
abiotic factors
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