AP test study questions

Illustrate
To explain with examples
Enumerate
To name one at a time
Trace
to tell the history of development
compare
to point out similarities
contrast
to discuss the differences
summarize
to give brief a description of the main points
evaluate
to discuss the merits of
justify
to give reasons for
critique
to summarize and evaluate
Apply
to put into action
Analyze
to separate into parts or baskic principles
criticize
to judge the merits and faults of
explain
to make plaine; expound
Human activity activity has completely altered, distrubed, or degraded __% of the earth’s land surface.
50%
Presently, the earth is experiencing its ____ great mass___ event, caused by ____ activity.
sixth, extinction, human activity
What percent of the animal and plant species in the us are vulnerable topremature extinction?
33%
Over __ % of the original wetlands have been destroyed by human activity (in the US)
50%
How many speciesare there on earth?
Probably 5-20 million
How many species on earth have been identified?
About1.4-1.8 million
Major causes of species extinction are…
Habitat distruction
Introduction of non native species
Climate change
Illegal hunting
Air, soil, and water pollution
What three levels can extinction take place on?
Local
Ecological
Biological
Local extinction means ..
A species is exinc in an area, but not world wide
Ecological extinction means…
A specie’s number have been reduced to the extent where they no longer play an ecological role
Biological extinction
All members of the species are gone worldwide
five catagories for scarcity classification
common, rare, threatned, endagered, extinct