What are the two main components of an ecosystem?

• Biotic and abiotic

• Living and nonliving

• Plants and animals

• Water and soil

What is primary succession?

• The process of succession in a barren area

• The first stage of ecological recovery

• The replacement of weeds by cultivated plants

• The final stage of ecosystem development

What would most likely happen to a marine ecosystem if beetles were removed from the food chain?

• The plant population would increase; the fish population would increase.

• The plant population would decrease; the fish population would increase.

• The plant population would stay the same; the fish population would decrease.

• The plant population would increase; the fish population would decrease.

The process by which an ecosystem develops over many years is called ecological ______.

The series of changes an ecosystem undergoes after being disrupted is called ______ succession.

Explain how the removal of foxes from a deciduous forest ecosystem would affect the populations of mice and bald eagles.

Describe how ecosystems demonstrate resilience after being disturbed by natural or human-made disasters.