Objective: Students will know that producers provide energy for other organisms in an ecosystem AND that almost all producers obtain energy from sunlight.

13.3/4 Energy in Ecosystems & Food Chains/Webs Set up Cornell Notes on pg. 87 Topic: 13.3/4 Energy in Ecosystems/ Food Chains and Webs Essential Question(s): Hypothesize: Few producers live deep below a lake’s surface. Suggest an explanation for this pattern. 13.3/4 Energy in Ecosystems & Food Chains/Webs 2.1 Atoms, Ions, and Molecules KEY CONCEPT Life in an ecosystem requires a source of energy. Food chains and food webs model the flow of energy in an ecosystem.

KEY CONCEPT Life in an ecosystem requires a source of energy.

All organisms must have a source of energy in order to survive.

Producers get their energy from non-living resources and are also called autotrophs because they make their own food. Can you name a producer? Auto= self

PLANTS Almost all producers use sunlight (photosynthesis) as their energy source.

What about the parts of the ocean that are SO deep they don’t get any sunlight? Where might they get their energy?

Chemosynthesis in prokaryote producers use chemicals as an energy source instead of sunlight. biological conversion of one or more carbon molecules (usually carbon dioxide or methane) and nutrients into organic matter using the oxidation of inorganic molecules (e.g. hydrogen gas, hydrogen sulfide) or methane as a source of energy carbon dioxide + water + hydrogen sulfide + oxygen sugar + sulfuric acid Chemosynthetic bacteria thrive in many of Yellowstone National Park’s hydrothermal pools

What do we call organisms that get their energy by “Eating” producers?

Consumers are organisms that get their energy by eating other living or once-living resources. They are also called heterotrophs because they feed off of different things. Hetero=different