Environmental Science. Teacher Copy

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1 Environmental Science Teacher Copy

2 Habitats! You are an organism!! Organisms obtain food, water, shelter and other things it needs to live, grow and reproduce from its environment.! A habitat is an environment that provides the things an organism needs to live, grow and reproduce.! What are some different kinds of habitats?


4 Biotic vs Abiotic Factors! An organism interacts with both the living and nonliving parts of its habitat.! The living parts of a habitat are called biotic factors.! Can you give some examples?! Abiotic Factors are the nonliving parts of an organism s habitat.! What are some examples? (water, sunlight, oxygen, temperature and soil)

5 Taxonomy! Scientists organize living things based on seven levels. 1. Kingdom! Keep Ponds Clean Or Frogs Get Sick 2. Phylum 3. Class 4. Order 5. Family 6. Genus 7. Species

6 Scientific Name! Using taxonomy scientists identify organisms using the genus and species for their scientific name. Canis, familiaris Felis domestica Artiodactyl Cervidae! What are people s scientific name? Homo sapiens

7 Levels of Organization! Species is a group of organisms that are physically similar AND can mate with one another to produce offspring that can ALSO mate and reproduce! All the members of one species in a particular area is called a population.! The community of organisms that live in a particular area along with their nonliving (abiotic) surroundings make up an ecosystem.! All the different populations and species that live together close enough to interact make up a community

8 Levels of Organization! From smallest to largest put these in order Organism 1 Community 3 Ecosystem 4 Population 2

9 Interactions! Organisms will interact with one another in one of three ways. 1. Competitionorganisms struggle to survive as they attempt to use the same limited resource 2. Predation- where one organism kills another for food. The organisms that does the killing is called the predator while the one killed is the prey.

10 Interactions 3. Symbiosis- close relationship between two species that benefits at least one of the species! Mutualism- both species benefit! Commensalism- one species benefits but the other is neither helped nor harmed! Parasitism- one organism lives on or inside the other harming it. The parasite benefits while the host is harmed

11 Energy Roles! Each of the organisms in an ecosystem fills the energy role of producer, decomposer, or consumer. 1. Producer- an organism that makes it s own food 2. Decomposer- break down wastes and dead organisms and return raw materials to the ecosystem

12 Energy Roles 3. Consumers- Gets food from feeding on other organisms. Cannot make their own food. There are three kinds a. Herbivores-Consumers that only eat plants b. Carnivores- consumers that only eat animals. Some are scavengers which feed on the bodies of dead animals c. Omnivore- consumers that eat both plants and animals

13 Food Chain! The movement of energy through an ecosystem can be shown in food chains and food webs 1. Food Chain- a series of events in which on organism eats another and obtains energy. The first organism is always a producer The second organism feeds on the producer and is called a first-level consumer The third organism feeds on the first level consumer and is called a second level consumer. Producer First-level consumer Second level consumer Third-level consumer

14 Food Web A food web consists of many overlapping food chains in an ecosystem. Organisms can be part of many food chains and therefore play more than one role in an ecosystem - Name a herbivore in the food web - Name a carnivore in the food web Beetle, rat, rabbit Fox, owl, stoat