Ecosystems at Risk: HSC Geography quiz quiz

How easily an ecosystem is harmed by a given stress

The capacity of an ecosystem to absorb stress and recover to its original state

The total number of species an ecosystem contains

The rate at which an ecosystem is being degraded by humans

Low biodiversity

High biodiversity

Small ecosystem size

Position at the edge of its climatic range

Natural and human-induced stresses can interact and amplify each other

All stress on the Reef is purely human-induced

Introduced species are the Reef's only threat

Climate change has no effect on the Reef

Two

Four

Seven

Twelve

Around 10 percent

Around 33 percent

Around 50 percent

Around 75 percent

Around 5,000 GL per year

Around 10,873 GL per year

Around 24,000 GL per year

Around 50,000 GL per year

Tropical cyclones

Illegal fishing

Climate change and the thermal stress it causes

Tourism vessel traffic

Both are marine ecosystems with identical stresses

It is freshwater and terrestrial, spans multiple states, and its dominant threats are domestic rather than global

It has no management framework to compare

It is smaller and less biodiverse than the Reef

Around 5 to 10 percent

Around 25 to 40 percent

Around 70 to 90 percent

Effectively none

Management always fails completely

Local stresses can be managed effectively while the dominant driver remains unresolved

Climate change is easily solved by single-jurisdiction action

Protected areas alone solve every threat