Which came first?
a single individual in a population
What is an organism?
the first level of organisms
What are producers?
a model of feeding relationships in an ecosystem
What is a food web?
level of energy with the most stored energy
What is producer level?
organisms who eat producers
What are primary consumers?
all of the abiotic and biotic factors in an area
What is an ecosystem?
organisms that eat other organisms
What are consumers?
Represents the flow of energy through feeding relationships
What are the arrows in food web/food chain? (Direction of arrow shows direction of energy)
level with the least amount of energy stored
What is tertiary consumers?
organisms who can eat secondary and primary consumers
What are tertiary consumers?
Two or more populations of species living together in an area
What is a community?
Each level in a food chain
What is a trophic level?
organisms who break down biotic materials
What are decomposers?
biomass is equal to
What is available energy?
These organisms can be omnivores.
What are secondary consumers?
All of the organisms of the same species in an area.
What is a population?
The second trophic level contains ______________
What are primary consumers?
make up the largest portion of a food web. Also known as autotrophs.
What is a producer?
Source of all energy in an ecosystem
What is the sun?
primary consumers are __________
What are herbivores?
Large regions of the earth with similar features.
What is biome?
These types of consumers are often omnivores and carnivores.
What are secondary and tertiary consumers?
eaten by herbivores
What are producers?
The number of trophic levels in an ecosystem are limited because
What is only 10% of energy gets transferred to the next level?
Tertiary consumers who hunt their prey are ________
What are predators?