1. Section 2.4 and 2.5
Energy in Ecosystems

2. Key Terms Radiant energy – comes from the sun
Thermal energy – energy transferred during heating and cooling

3. Photosynthesis
The process in which the Sun’s energy is converted into chemical energy
Carbon dioxide + water  sugar + oxygen

4. Food Chains & Webs
Producer (first trophic level) – an organism that can make its own food.
Primary consumers (second trophic level) – herbivores
Secondary consumers (third trophic level) – omnivores/small carnivores
Tertiary consumers (fourth trophic level) – larger carnivores
Scavengers (any level) – feeds on the remains of other organisms

7. Ecological Niches
The function a species serves in an ecosystem, including what is eats and how it behaves.

8. Ecological Pyramids
Show the relationships between the trophic levels in ecosystems (the amount of energy, numbers or biomass)

9. Today’s Tasks Weaving a food web activity Pg. 45 #1-5