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Interactions in Ecosystems

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Presentation on theme: "Interactions in Ecosystems"— Presentation transcript:

1 Interactions in Ecosystems
Lesson 2

2 Do Now – What is Ecology? Abiotic Factor Habitat Biological Community
DO Now: Matching Abiotic Factor Habitat Biological Community Niche Essential Question: What is symbiosis? What is predation? Objective: SWBAT identify and describe community interactions A tick on a cat Rain A sunflower is a producer Insects, slugs, and earthworms under a log

3 Lesson Overview HOMEWORK AGENDA Principles of Ecology Review
Study for Quiz 1 of Unit 2 AGENDA Finish Biological Communities Lab What is Ecology Video & Questions Discussion: Community Interactions

4 copyright cmassengale
What is Ecology Wrap Up Lab Analyze soil and water sample Record Data Show Mrs. Thomas your pics. Clean Up Video and Questions Watch Video Use information to answer video questions in your notes. copyright cmassengale

5 Predation Predation: One animal hunts and kills another for food. Predator limits the prey’s population size. Predator : The hunter Unique adaptations to help capture prey Prey: The hunted Unique adaptations to avoid being eaten Balance: Predator can’t eat all of prey or food will be gone for good.

6 Lynx Chases Hare

7 Lynx and Hare Graph

8 Living Relationships: Symbiosis
Symbiosis: when organisms live together and interact regularly with one another 3 Types: Mutualism, Parasitism, and Commensalism

9 Living Relationships: Symbiosis
1. Mutualism: both species involved benefit Ex. Ants and acacia trees, Egyptian plovers and crocodiles

10 Living Relationships: Symbiosis
2. Parasitism: one species benefits, the other is harmed Ex. Tapeworms, ticks, guinea worms, organism that causes malaria Parasitism and Disease: parasites limit the growth of a population by causing diseases

11 Living Relationships: Symbiosis
3. Commensalism: one species benefits, the other is unaffected Ex. Barnacles and whales

12 Living Relationships: Symbiosis
Symbiotic Relationship Effect on Species Mutualism + + Parasitism + - Commensalism + o

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