1. ECOSYSTEM
                                                                                                                                                                                                                                                         

2. Ecosystem 3 levels that make up an ecosystem Individual Population
Community
Is a natural unit of living (Biotic) and non-living (Abiotic) things that work together.
Eg: Marine, Aquatic, Desert, Rainforest, Tundra and many more

4. Notes
An ecosystem is a community of living and non-living things that work together.

5. Trophic Relations
Ecosystems are natural machines that change matter and energy in the area
Trophic- from the Greek word FOOD
Trophic relations: the natural connections of food between living organisms
ie. The food chain

7. Food Chain
Producers
Consumers
Decomposers

9. Producers
Producers are organisms, (photosynthetic) like green plants, that produce organic compounds from inorganic compounds.
Autotroph - lowest level in the food chain
They use sun light, carbon dioxide, and nutrients to produce organic material
Inorganic: water, salts, minerals
Organic: proteins, fats

11. Consumers
Organisms that obtain nutrients from other organisms. This is also a heterotroph.
Heterotroph is an organism that cannot synthesize their own food and must obtain it.
Heterotrophs include herbivores (feed only on plants), carnivores (feed on other animals), omnivores (feed on both) and saprobes (breaking down the remains of dead plants and animals).

12. Consumers Many types of consumers First order – usually herbivores
Second order
Third order
Fourth order

16. Decomposers
An organism that primarily feeds on dead organisms or the waste from living organisms
Decomposers are the garbage men of the animal kingdom

18. Notes Trophic relations: Food Chain
Producers: organisms that produce organic compounds from inorganic compounds. (plants)
They use sun light, CO2, and nutrients
Inorganic: water, salts, minerals
Organic: proteins, fats

19. Notes Consumers: Organisms that obtain nutrients from other organisms.
First order – usually herbivores, eat only grains fruits, etc.
Second order – eat the first order animals
Third order – eat the one preceding
Fourth order – top of the food chain

20. Notes
Decomposers: primarily feeds on dead organisms or the waste from living organisms