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 the 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?
Represent the flow of energy through feeding relationships
What are the arrows in food web/food chain?
level with the least amount of energy stored
What is tertiary (quaternary if present) consumers?
organisms who can eat secondary and primary consumers
What are tertiary consumers?
All of the the organisms in a region
What is a community?
Each level in a food chain
What is a trophic level?
biomass is equal to
What is the amount of available energy?
These organisms can be omnivores.
What are secondary, tertiary and quaternary consumers?
All of the organisms in a species in an area.
What is a population?
The second trophic level contains ______________
What are primary consumers?
which type of consumer shows the most variety
What is secondary consumer?
Source of all energy in an ecosystem
What is the sun?
primary consumers are __________
What herbivores?
Large regions of the earth with similar features.
What is a biome?
These types of consumers are often omnivores and carnivores.
What are secondary and tertiary consumers?
herbivores eat this level
What are producers?
trophic levels in an ecosystem are limited because
the amount of available energy decreases by 90% every time you move up each level
Tertiary consumers who hunt their prey are ________
What are predators?