1. Topic #3: Movement of Energy How does energy move through the trophic levels?

2. Biotic vs. Abiotic Factors
Biotic – living things
Abiotic – non living things/conditions

4. Do Abiotic Factors Affect Biotic factors?
Yes! Both are necessary to the survival of every organism!
Plants need sun & water
Fish need correct salinity & water temp
Peppered moths were affected by pollution

5. Niche The role an organism plays in its environment
This is how it meets its needs
Example:
A wrasse’s niche is to clean inside the mouth of large groupers

6. Creating a Food Chain
Using the cards you’ve been given, create a food chain that includes 5 cards.

7. A food chain is a model that shows how energy flows through an ecosystem
Links species by feeding relationships
DESERT COTTONTAIL
GRAMA GRASS
HARRIS’S HAWK

8. Divide all of your cards into 2 categories: Producers & Consumers
Can you break down the cards even further?

9. Producers (autotrophs) – make their own food through photosynthesis

10. Consumers are not all alike.
Herbivores eat only plants.
Carnivores eat only animals.
Omnivores eat both plants and animals.
Decomposers eat dead organic matter.
break down organic matter into simpler compounds (bacteria & fungi)
carnivore
decomposer
herbivore

11. What is a vegetarian considered?
Herbivore?
Carnivore?
Omnivore?

12. What is the difference between a food chain & a food web?
Food chain – shows one possible path for obtaining energy
Food Web – shows a complex network of feeding relationships

13. Use your cards to create a food web!