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Community Structures
Changing Communities
Chemical Cycling
Variety of Species
Trophic Levels
100
This level of the food web includes plants.
What are primary producers?
100
Events such as storms, fires, floods, and droughts.
What are disturbances?
100
This level in the hierarchy of organization consists of all the organisms in a community and the abiotic factors.
What is a ecosystem?
100
A species that lives in one particular area is called?
What is endemic species?
100
The consumer at the top of the food chain with no predators is this type of predators.
What is an apex or top predator?
200
This is the 3rd level of consumers in a food chain or web.
What are tertiary consumers?
200
The process when succesion begins in virtually lifeless area with no soil.
What is primary succession?
200
This is the transfer of materials within the ecosystem.
What is chemical cycling?
200
A species with no living individuals is considered to be this.
What is extinct?
200
a food web is a _______ of interconnecting food chain
What is network
300
These organisms secrete enzymes that digest organic materials.
What are decomposers?
300
Occurs when disturbances have cleared away an existing communtiy but left the soil intact.
What is secondary succession?
300
The passing of energy through the components of the ecosystem.
What is energy flow?
300
A species with a declining population is considered to be this.
What is endangered?
300
this is the key factor in community is
What is trophic structure
400
This kind of trophic structure moves energy up through the tropic levels in a community.
What is the food chain.
400
When the disturbed area is colonized by a variety of new species.
What is ecological succession?
400
This process is completed by some bacteria, converts to N2 to compound of nitrogen that can be used by plants
What is Nitrogen Fixation?
400
This type of species is vital for a particular habitat and raises the biodiversity despite its small population.
What is keystone species?
400
this amount of energy is passed to the next level in the food chain.
What is 10%?
500
A series of reciprocal evolutionary adaptations in two species.
What is coevolution?
500
These cause environmental or economic damage by colonizing and dominating wherever they find a suitable habitat.
What is an invasive species?
500
This is released in the nitrogen cycle during decomposition.
What is NH4+?
500
This is a non-native species that destroys the environment.
What is an invasive species?
500
these are the names of the trophic levels in order.
What is producers,primary consumers,secondary consumers,tertiary consumer,Quaternary consumers?