Use this picture to answer the questions below:

What is happening in the picture on the left?
What is happening in the picture on the right?
What happens to food after an animal eats it? Choose all the correct answers.
Use the picture below to answer the questions
What 2 things happen to the grass molecules once they are eaten by the zebra?
Sentence starter: The grass molecules ___________________
What 2 things happen to the zebra molecules once they are eaten by the cheetah?
Sentence starter: The zebra molecules ___________________
What do the arrows represent in this model? Use the words direction and food matter (molecules) in your answer. Read page 14 to help you answer this question.
Sentence starter: The arrows represent ____________________

What does a food web show? Read page 16 to help you answer this question.
Sentence starter: A food web shows ____________________

Start with the algae and follow the arrows up to the alligator. Use the food web to fill in the food chain below.

| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
raccoon | arrow_right_alt | 8.1 |
mosquito | arrow_right_alt | 8.2 |
frog | arrow_right_alt | 8.3 |
Start with the algae again, but this time, find a different way up to the alligator. What eats what in this ecosystem?

| Stavka koja se može prevući | arrow_right_alt | Odgovarajuća stavka |
|---|---|---|
grass carp | arrow_right_alt | 9.1 |
heron | arrow_right_alt | 9.2 |
mosquito | arrow_right_alt | 9.3 |
Where does the alligator get its food molecules?
Sentence starter: The alligator gets food molecules from _____________________
What are two organisms (living things) in the picture to the right? What is something that is NOT an organism (nonliving)?
Sentence starter: Two organisms are the ___________________ and the ___________________. ___________________ is not an organism.
The cards describe the relationships between different organisms in the food web.
-Use the relationships AND the scribble tool to draw arrows showing how matter moves through the ecosystem.
-Your arrow should point in the direction that matter moves.
-Let's do the raccoon together as an example.
Each set of cubes represents the body matter of the organism.

The cubes for represent food/body matter (molecules) for each organism (living thing)
What was happening to the molecules in the ecosystem as the cubes (the matter) were getting passed from one organism to the next?
The Food Web Model can help us think about how matter flows when something in the ecosystem changes.

What do you think would happen to your food web if there were no carp or frogs?
What do you think would happen to your food web if there were no plants or algae?
Do you have any new ideas about where food molecules in an ecosystem come from, based on the Food Web Model?