Page 131Page 132 Interactions in an Ecosystem WARM – UP Use your prior knowledge to define the following words: Predator Prey Habitat Ecosystem Homework: Create Your Own Creature Monday, April 8, 2013 Tuesday, April 9, 2013 Create your Own Creature Habitat vs. Niche Write a sentence for each using the terms in context. Five Specific Interactions in an Ecosystem Predation – Competition – Parasitism - Mutualism - Commensalism - Writing and Discussion About Predation

Interactions in an Ecosystem PredationCompetition Whale Shark eats plankton and small fish Hawks and fox eat mice.

Interactions in an Ecosystem ParasitismMutualism Mosquito sucking blood from animals. Oxpecker Bird eats ticks and parasites. Beasts get pest control

Interactions in an Ecosystem Mutualism Remora sharks have an adhesive disk on their dorsal surface, with the help of which they attach themselves to whales and then, clean the whale’s skin and feed on the remains from the whale's food.

Interactions in an Ecosystem Commensalism "The pearlfish uses the sea cucumber for a hide-out from predators. The pearlfish will live in the sea cucumber’s anus, backing into the hole tail-first so its head can stick out."

Interactions in an Ecosystem Commensalism Glass shrimp, which are almost completely see through, will attach to the chocolate chip sea star and take on its coloration. This helps the shrimp camouflage itself so it is not eaten by predators."

Page 133Page 134 Energy in an Ecosystem WARM – UP Symbiosis means any prolonged association of living together of two or more organisms of different species. Create a KIM card for “symbiosis” Homework: Complete lab analysis Wednesday, April 10, 2013 Thursday, April 11, 2013 Complete Lab Analysis Questions K K = Key Word I I = Info. or definition M M = Memory Cue or picture Your Sentence Pre-Assessment Practice Questions Review Cellular Respiration Formula C 6 H 12 O 6 + 6O 2 ATP + 6 H 2 O + 6 CO 2 Reactants Glucose and oxygen Products Energy, water, and carbon dioxide Importance of ATP = energy rich molecule Oxidation = the act of combining with oxygen What kind of organisms = ALL Relation to Photosynthesis Review Trophic Pyramid Activity/Lab Energy Flow in Ecosystems

Nearly all of the energy that drives ecosystems ultimately comes from the sun. Solar energy, which is an abiotic factor, by the way, enters the ecosystem through the process of photosynthesis. Primary consumers only obtain a fraction of the total solar energy—about 10%— captured by the producers they eat. The other 90% is used by the producer for growth, reproduction, and survival, or it is lost as heat. At each level, called a trophic level, about 90% of the energy is lost.