Interactions and Ecosystems

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Presentation transcript:

Interactions and Ecosystems Topic 1 Interactions within an Ecosystem

Ecology Ecology is the study of the relationship between living things and their environment Ecologists study these relationships and what impacts them

Needs of living things Living things need: food a suitable habitat water an exchange of gases Living things interact with their environment to meet their needs

Adaptations Look at these two beaks? How do they differ? How are they similar? Why? do you think they would have different beaks?

Adaptations Living things become better suited to fit into their environment An adaptation is an inherited characteristic that helps an organism reproduce and meet its needs

Adaptations Some adaptations can be learned! Humans learn to look both ways before crossing the street in order to help us survive We also use technology to help us live in extreme environments

Ecosystems An ecosystem is all of the living and non living things in an environment Non living things - write down 3 examples Living things - write down 3 examples

Interactions Symbiosis occurs when two species live closely together in a relationship that lasts over time Predator and prey relationships are NOT an example of symbiosis

Mutualism Mutualism is a relationship between two different organisms where both benefit Ex. Bee and flower

Commensalism Commensalism is a relationship where one partner benefits and the other is not affected Ex. Orchid and tree

Parasitism Parasitism is a relationship where one partner benefits and the other is harmed Ex. Tapeworm and human

Homework Pg 17 1-4