How Ecosystems Work

An Atmospheric gas that increases when fossil fuels are burned off

• Secondary Succession

• Algal Bloom

• Carbon Dioxide

• Climax Community

Evidence of excessive fertilizer use

• Algal Bloom

• Ecological Succession

• Climax Community

• Old-Field Succession

A final and stable community

• Old-Field Succession

• Carbon Dioxide

• Secondary Succession

• Climax Community

A type of succession that occurs on abandoned farmland

• Ecological Succession

• Algal Bloom

• Secondary Succession

• Old-Field Succession

A gradual process of change and replacement of types of species in a community

• Carbon Dioxide

• Ecological Succession

• Climax Community

• Algal Bloom

A common type of succession that occurs on a surface where an ecosystem has previously existed

• Carbon Dioxide

• Secondary Succession

• Climax Community

• Ecological Succession

What is the ultimate source of energy for almost all organisms except those living deep in the ocean near a thermal vent?

• producers

• consumers

• the sun

• bacteria

Which of these consumers might depend on a rabbit for its energy?

• grasshopper

• coyote

• cow

• horse

A consumer that eats only producers is called a(n)

• omnivore

• autotroph

• carnivore

• herbivore

What term is used to described a linear sequence in which energy is transmitted from one organism to the next as each organism eats another organism?

• food web

• food chain

• trophic level

• energy pyramid