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 least stored energy
tertiary
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?
how does energy move to a new level?
when something is eaten
levels that have heterotrophs
primary, secondary, tertiary consumers
All of the the organisms in a region
What is a community?
Which level has 100% of energy?
producers
organisms who break down biotic materials
What are decomposers?
What happens if the producers all die?
everything dies
What do decomposers eat?
all levels
All of the organisms in a species in an area.
What is a population?
give 2 examples of tertiary consumers
...
What level are zooplankton?
primary consumer
Source of all energy in an ecosystem
What is the sun?
What is energy lost as?
heat and decomposing matter
Large regions of the earth with similar features.
What is biome?
These 2 types of consumers are often omnivores
What are secondary and tertiary consumers?
Give 4 examples of primary consumers
?
If producers have 340 calories, how much does the secondary consumers have?
3.4 calories
Tertiary consumers who hunt their prey are...
What are predators?