ENSC Chapters 9 and 10

________ is when the last member of a species dies and the species ceases to exist

• Extinct

• Endangered

• Extirpated

• Targeted

________ is the disappearance of a particular population in an area

• Extinct

• Endangered

• Extirpated

• Targeted

________ is when species are at risk for becoming extirpated or extinct

• Extinct

• Endangered

• Extirpated

• Targeted

________ is when a species is likely to become endangered in the near future

• Extinct

• Endangered

• Extirpated

• Targeted

Vulnerable species are...

• of particular concern because of characteristics that make them sensitive to human activity and natural events

• of no concern because they are quite resistant to human activity and natural events

What is the greatest threat to biodiversity?

• Overharvesting

• Invasive species

• Habitat alteration

• Climate change

Overharvesting is a big risk for what kind of species?

• K selected

• R selected

For a forest to be considered an old-growth forest, the trees must be at least ________

• 60 years old

• 150 years old

• 60 feet tall

• 150 feet tall

______ forests are characterized by cold/dry climates with short growing seasons, coniferous trees, and are at high latitude.

• Boreal

• Temperate

• Tropical

______ forests are characterized by deciduous trees with seasonal temperatures, and are at mid latitude.

• Boreal

• Temperate

• Tropical