Chapter 3

Introduction to Ecology

Biosphere

• What is included? (Draw a circle below and all components inside)

Levels of Ecological Organization

• Draw a representation of each level:

Biome

ecosystem

community

population

Species

Biotic vs Abiotic

• Create a t-chart listing biotic and abiotic factors in our schoolyard

Food chains

• Do they represent true ecosystem relationships?

• Which way do the arrows point?

• Draw an example:

Food webs

• How do food webs differ from food chains?

Trophic levels and ecological pyramids• What happens to the amount of available energy and

biomass as it passes from one trophic level to the next?

Analyzing Data- page 77

1)

2)

3)