Exam 5: Sustaining Biodiversity: The Species Approach

The Endangered Species Act requires that agencies add or remove species from the endangered list based on

A threatened species is

A 1/1,000,000 species per year extinction rate, which is the estimated average rate of extinction in the history of life on the earth, is called ____ extinction.

The single greatest cause of extinction and decline in global diversity is habitat destruction of

A nonnative species is most likely to become a harmful invasive species in its new ecosystem if it

Some species are good ____________________ because they live in all biomes and climates, respond promptly to changes in the environment, and are easy to mark and recapture.

What major effect has the Argentina fire ant had on southeastern ecosystems?

____ occurs when a population is too small to sustain its role in biological communities.

A city park and a freshwater lake are examples of ____________________ that are vulnerable to non-native species and pollution.

a.osprey b.zooplankton -As DDT bioaccumulates in the accompanying ecosystem, which species would have the highest concentration in their body?

What are two major hindrances to protecting species extinction within a single human lifetime?

The process by which chemicals ingested by species in the lower trophic levels of an ecosystem build up in organisms in higher trophic levels is called

The best way to deal with harmful invasive species is to prevent them from becoming established in an area.

Successful recovery plans under the Endangered Species Act have benefited the

List four ways in which we can protect wild species from human caused extinctions.