APES Final Unit 1: Living World

Front

What is a positive feedback loop?

Back

A positive feedback loop occurs when feedback into a system increases a rate of response.

Front

What allows two closely related species to coexist in the same habitat?

Back

Each species occupies a different niche.

Front

Where is the largest carbon pool found?

Back

The largest carbon pool is found in sedimentary rock.

Front

How does nitrogen naturally get into the soil?

Back

Nitrogen gets into the soil through decomposing animals.

Front

What law relates to energy loss within an ecosystem?

Back

The Second law of thermodynamics.

Front

Define 'niche' in an ecological context.

Back

A niche is the role or function of an organism or species within an ecosystem, including its habitat, resource use, and interactions with other organisms.

Front

What is the role of decomposers in an ecosystem?

Back

Decomposers break down dead organic matter, returning nutrients to the soil and making them available for plants.

Front

Explain the concept of carrying capacity.

Back

Carrying capacity is the maximum number of individuals of a species that an environment can sustainably support.

Front

What is the significance of biodiversity in ecosystems?

Back

Biodiversity enhances ecosystem resilience, productivity, and stability, allowing ecosystems to better withstand environmental changes.

Front

What is the difference between primary and secondary succession?

Back

Primary succession occurs in lifeless areas where soil has not yet formed, while secondary succession occurs in areas where a disturbance has destroyed an existing community but soil remains.