2024 - 2025 Environmental Semester Exam Review

Front

What is a primary consumer?

Back

An organism in a food chain or food web that eats plants or producers.

Front

What catastrophic event is most likely to return an ecosystem to primary succession?

Back

A volcanic eruption.

Front

What is the most important action to restore a forest habitat?

Back

Plant the same type of native trees.

Front

What is a density-independent factor?

Back

A factor that affects population size regardless of the size of the population.

Front

What is the death rate in Stage 1 of demographic transition?

Back

High.

Front

Define a producer in an ecosystem.

Back

An organism that produces its own food through photosynthesis, typically plants.

Front

What is secondary succession?

Back

The process of ecosystem recovery that occurs after a disturbance that does not completely destroy the ecosystem.

Front

What role do decomposers play in an ecosystem?

Back

They break down dead organic material, returning nutrients to the soil.

Front

What is the difference between a food chain and a food web?

Back

A food chain is a linear sequence of organisms through which nutrients and energy pass, while a food web is a complex network of interconnected food chains.

Front

What is an example of a density-dependent factor?

Back

Predation, competition, and disease, which affect population size based on the population density.