Parts of Food Chains
Reading Food Webs
Consumer/Producer/Decomposers
Ecosystem Changes 1
MORE Ecosystem Changes
100
consumers need this to survive
Producers
100
what is the producers
the grass
100
I eat other organisms for energy
consumer
100
Deer eat corn. If the corn amount decreased, what would happen to the deer population?
It would also decrease.
100
What could happen if there were no producers?
Nothing else could survive.
200
I am the end of a food chain.
Decomposers
200
what is the energy source?
sun -> algae -> frog -> snake
sun
200
We are important because we return nutrients to the soil when we break down dead organisms.
Decomposers.
200
What would happen to the grass if there were an overabundance of rabbits?
less grass
200
If a food source for pandas became scarce, what could eventually happen to the pandas?
They could go extinct.
300
what is the energy source for all food chains?
the sun
300
what is the producer? sun -> algae -> frog -> snake
algae
300
List 3 decomposers.
mushrooms, bacteria, earthworms, fungi, soil bacteria
300
True or False: Changes in an ecosystem only effects one organism.
False
300
List 2 things that could harm an ecosystem.
removing a predator, using pesticides, overhunting an organism, destroying habitats.
400
i make my own food
plants/producers
400
what is the consumer? sun -> algae -> frog -> snake
frog/snake
400
List 2 things that decomposers break down.
dead leaves, dead organisms, dead plants
400
What would increase competition within an ecosystem?
New predator introduced, new consumers introduced, increase in consumers
400
List two things that could happen if a producer's population got dangerously low.
1. increased competition for food for their consumers
2. consumers would have to migrate (move) or not survive
3. it would change the flow of energy within the ecosystem
500
why is the algae important for the frog?
sun -> algae -> frog -> snake
It is its energy source
500
Trace the flow of energy starting with the sun, including 1 producer and 2 consumers. 
Possible response: The sun gives the tree energy that it turns into food for the mouse. The mouse then gets eaten by the snake and the energy flows to the snake from the mouse.
500
I take energy from the sun and turn it into food.
producers
500
In the following food chain, what would happen to the deer if the bears were removed?
grass -> deer -> bear
deer populations would increase.
500
The effects of THIS happening to an ecosystem is Increased competition for food
New consumer