Column 1
A _______________ makes its own energy and begins the food chain.
producer
Interact
Where does all energy begin?
The sun
Who is the consumer?
1. grass
2. rabbit
3. wolf
4. rabbit and wolf
4. rabbit and wolf
Stable ecosystem
What do you call an organism that breaks down dead and decaying organisms?
Decomposers
What is the proper name for third level consumers?
tertiary consumers
What is the percent of energy passed on from one level to the next in an energy pyramid?
10%
Of the following, which is the correct sequence for the flow of energy in a food chain?
1. consumers, decomposers, producers
2. producers, consumers, decomposers
3. consumers, producers, decomposers
4. decomposers, producers, consumers
2. producers, consumers, decomposers
What is the difference between abiotic and biotic factors?
Give two examples of each.
abiotic are the nonliving factors in an ecosystem
biotic are the living factors in an ecosystem
examples will vary.
What is a food chain?
It shows how matter and energy flow from one organism to another.
Organisms that are too small to see.
What is the difference between Phytoplankton and Zooplankton?
Phytoplankton are producers
Zooplankton are consumers
Which has arrows that represent energy transfer?
1. food chain
2. food web
3. neither
4. both
4. both - food chain and a food web
Is competition in an ecosystem bad?
Not always. It is only a problem unless something causes it to become unbalanced.
Worms, fungi, and bacteria are all
decomposers
What is competition in an ecosystem?
When organisms need the same resources.
What would happen if one organism in a food chain was removed?
The rest of the food chain would die off and the organisms below it would become overpopulated.
What is the connection between a healthy ecosystem and stability?
All organisms can meet their needs in a healthy ecosystem. This happens when food webs and matter cycles are stable.
What are three different characteristics of a healthy ecosystem?
Adequate shelter and nesting sites
Balance of decomposers, producers, and consumers
A variety of species
Adequate supply of clean air, water, and nutrients
What is a food web?
A set of interconnected food chains
Explain the succession that happens to an ecosystem after a natural event like a forest fire happens.
First everything is burned and killed off
Then small producers start to grow again like grass, flowers, weeds
Then more producers like trees start to grow which starts to attract primary consumers
Then primary consumers start to attract secondary consumers and the ecosystem starts to become stable once again
What would happen if one organism in a food web was removed?
Who is the producer out of the following?
1. grass
2. rabbit
3. wolf
4. Mushrooms
grass
What are three different threats to a healthy ecosystem?
Habitat loss due to human action
Natural events like forest fire
Pollution
Drought
Overfishing / overharvesting / deforestation
Rapidly growing human population
Introduced species that crowd out other species (competition)