Worksheets5.2 Threats to Biodiversity ม4
Total questions: 10
Worksheet time: 3mins
What is an introduced species?
A native (naturally found) species which are added to an area.
A non-native (not naturally found) species added to an area.
A keystone species in an environment
none of the above
_______ happens when pollutants rich in nitrogen and phosphorus contaminate waterways causing excessive algae growth.
Eutrophication
Introduced species
Biological Augmentation
Nonrenewable Resource
The primary causes of extinction (and endangerment and threatened status) is...
polar ice cap melting
global warming
habitat loss and degradation
burning of fossil fuels
How does habitat fragmentation reduce genetic diversity in species?
Habitat fragmentation makes nonnative species introduction possible.
Habitat fragmentation opens migration routes.
Habitat fragmentation isolates a large population into smaller groups.
Habitat fragementation encourages open gene flow.
What name is given to precipitation that contains nitric and/or sulfuric acids?
acid rain
deforestication
global warming
eutrophication
What is the practice of harvesting or hunting to such a degree that remaining individuals may not be able to replenish the population called?
pollution
deforestation
overexploitation
acid rain
Which organism in the food web shown to the right would
contain the highest concentration of chemical pollutants?
Producers
Primary consumers
Secondary consumers
Tertiary consumers
Habitat fragmentation causes....
less interior habitat and more edge habitat
more interior habitat and less edge habitat
less interior habitat and less edge habitat
more interior habitat and more edge habitat
This is the extinction of a species one by one, not a sudden loss of many species
background extinction
mass extinction
fragmentation
biotic potential
