Show:
Food Chains
Food Webs
Succession
Pyramids
SFA
100
Source of all energy on earth
What is the sun
100
The difference between a food chain and a food web
What is - food chain shows one feeding relationship & food web shows all of them
100
Begins on a previously uninhabited area
What is primary succession
100
because there is less energy available as you move up a food chain or web
What is the reason energy maps make a pyramid shape
100
an increase in the death rate or the introduction of a competitor species
What is something that would cause a population to decrease
200
Organism that begins all food chains
What is a producer
200
What happens to the producer population if all the herbivores die?
What is population will increase dramatically
200
Begins in an area that has been previously occupied by organic species
What is secondary succession
200
One step on a biomass pyramid
What is a trophic level
200
a group of differnet populations that cooexist in a given ecosystem
What is a community
300
Another name for producer - Remember it is "Self-Feeding"
What is Autotroph
300
the name of a single step in a food chain or web
What is a trophic level
300
the first species to appear in a previously uninhabited place
What is pioneer species - will also accept lichens
300
the total amount of living tissue at a given trophic level
What is biomass
300
eats other organisms for energy
What is a heterotroph
400
Any organism who has to consume another for energy - "Other-Feeding"
What is a heterotroph
400
More accurate representation of the feeding relationships in an ecosystem because it shows all of them
What is a food web
400
the final stage of succession
What is a climax community
400
a pyramid that shows the actual number of organisms at a given trophic level
What is a pyramid of numbers
400
the point at which an ecosystem can no longer support any more of a given organism
What is carrying capacity
500
These animals eat both producers and consumers
What is an omnivore
500
The top level organism in a food web is usually this type of organism, who only eats meat
What is a carnivore
500
the term for a series of predictable steps an ecosystem will follow if left undisturbed by man
What is succession
500
the sum total of all organisms that live in a given ecosystem. HINT: the more of this, the more stable an ecosystem is
What is biodiversity
500
a period of rapid growth that occurs when a new species is introduced to an environment
What is exponential growth