Warm Up #8 How are photosynthesis and chemosynthesis different?

Ch. 6 Interactions Within Ecosystems Lesson 2: Energy and Matter

Essential Questions How does energy move through an ecosystem? How does matter move through an ecosystem?

Food Energy Producers – organisms that use an outside energy source, such as the Sun, and produce their own food Ex: plants and other organisms that use photosynthesis Chemosynthesis – organisms use chemicals instead of light (some bacteria)

Food Energy Consumers – organisms that can’t make their own food Herbivores – eat producers Omnivores – eat producers and consumers Carnivores – eat herbivores, omnivores, and other carnivores Detritivores – consume the bodies of dead organisms and wastes produced by living organisms Decomposers – microscopic detritivores

The Flow of Energy Food Chains – simple model showing how energy moves from producer to 1 or more consumer BrainPOP – Food Chain Food Webs – a model of energy transfer that can show how the food chains in a community are interconnected

The Flow of Energy Energy Pyramids – a model that shows the amount of energy available in each link of a food chain There’s always a loss of energy at each level due to heat lost and the animal using some of it The reason why there’s more producers than carnivores in a community BrainPOP – Energy Pyramid

Warm Up #9 What are the parts of the nitrogen cycle?

Cycling Materials Nitrogen Cycle – describes how nitrogen moves from the atmosphere to the soil into the bodies of living organisms and back to the atmosphere nitrogen gas makes up 78% of Earth’s atmosphere

Cycling Materials Water Cycle – water moves from the Earth’s surface into the atmosphere and then back again

Cycling Materials Oxygen and Carbon Dioxide Cycles – cellular respiration releases carbon dioxide and plants take that in during photosynthesis releasing oxygen