© 2013 Pearson Education, Inc.Figure 6.19 Energy Flow in a Grassland Ecosystem (step 5)

4th trophic levelTertiary consumers

1st trophic levelPrimary producers

Energyfrom the

sun

2nd trophic levelPrimary consumers

3rd trophic levelSecondary consumers

DecomposersOrganisms thatfeed on nonlivingorganic matter

Nutrition terms

• Autotrophic=producing own food such as plants

• Heterotrophic =eats preformed organic material (contains carbon in covalent linkage)

• Saprotrophic=absorb nutrients from dead organisms (fungi and bacteria)

• Chemosynthetic=getting energy from the oxidation of hydrogen sulfide gas (H2S)

NUTRITION

• OMNIVORE-EATS PLANTS AND ANIMALS• HERBIVORE-EATS PLANTS• CARNIVORE-EATS MEAT

http://www.youtube.com/watch?v=BLOUFrncG7E

Nutrition

• Herbivore=eats plants • Carnivore=eats meat• Omnivore =eats both plants and animals

ECOSYSTEMS

• LIVING AND NONLIVING TOGETHER• LIVING-PLANTS, ANIMALS, BACTERIA,FUNGI• NONLIVING-

AIR,LAND,GRAVITY,ROCKS,TEMPERATURE, ETC.• BIOTIC=LIVING• ABIOTIC=NONLIVING